How do you choose the floor configuration for the Zhijie V9? Prioritize full-cabin aluminum hard trim, and carefully check that the hidden rails, second-row trim covers and edge trim strips are all complete and neat. If you run a ride-hailing service on long, rainy routes, also make sure anti-slip, drainage and wear resistance are all covered.
On long rainy trips, what you really need to guard against is mud buildup in the rails
After consecutive downpours on intercity runs, the rear seat rails are often dirtier than the visible floor. Passengers getting off and back on at highway service areas track in fine sand on their soles, and muddy water seeps along the floor seams to the base of the rails—narrow channels that even a wrung-out cloth can't reach the bottom of. Left uncleaned for two days, the locking areas can be smeared with mud; once the wet mud dries and hardens, the rails get stiff and start squeaking.
The Zhijie V9 is an MPV, and the seat rails and the area around the second-row trim covers are exactly where grime collects. With only partial hard trim, the rail openings and areas beside the trim covers may still be bare seams or factory carpet, absorbing moisture and sand on rainy days all the same. A full-cabin aluminum floor shouldn't just pursue surface continuity—it also needs rails that can be opened for maintenance, trim covers that can be removed independently, and no dust traps in corners. Only when the structure is done right will muddy water stop repeatedly emerging from unseen places.
Do a 20-minute check before a long trip: shine a flashlight at the base of the rails, slide the seats back and forth along them, and confirm there's no standing water, hard particles or abnormal friction noise. If you find mud, scrape it off first, then dry the bottom of the channel—never pour oil into the rails. At handover and acceptance, crouch down to inspect the rail openings, trim cover edges and trim strips, confirming no lifted edges, water traps or mud lines. For a vehicle carrying passengers daily, being quick to clean and not retaining moisture matters more than flashy styling.
Why do ride-hailing drivers value full-cabin hard trim more?
When driving for hire, the most frequently touched areas in a day aren't the driver's seat but the door sills, the second-row footwell and the areas around the seat rails. On rainy days, once muddy shoes step in, muddy water works its way through the fibers of the factory carpet; dealing with it after finishing the shift often eats into the ten-plus minutes needed for the next fare.
The value of a full-cabin aluminum floor is that after removing the seats, the surface is covered continuously, bringing the hidden rails, second-row trim covers and edge trim all within the cleaning scope. A spilled drink wipes up in one pass with a damp cloth; when you open the rail covers, you can vacuum out the grit inside in passing, so dirt no longer hides beneath the structure.
For independent ride-hailing drivers, fixed flooring has two very practical benefits: less stuff to move around each day, and no repeated disassembly and reassembly after closing out the shift. With long-term, high-frequency use, the sills and areas under the seats are also less likely to loosen or lift edges. It won't earn you an extra fare, but it makes every end-of-shift cleanup a little less draining. On weekends when you run six or seven fares back to back, cleaning efficiency stays consistent, and passengers won't be greeted by mud stains the moment the door opens.
When choosing a configuration, look at the aluminum alloy, thickness and vehicle fit first
Don't fixate on colors and patterns when choosing a configuration. Running a ride-hailing service means daily boarding, alighting and luggage loading—what you really need to clarify is the aluminum alloy and plate thickness. Yunluo corresponds to 6061 pure aluminum, while aviation aluminum corresponds to 5052; the shop should present material certification reports and plate cross-sections for inspection. In-store, use calipers to measure the aluminum plate body—don't mistake total thickness for the load-bearing plate thickness, and don't just take someone's word for "aviation grade."
Thicker isn't always better; the folded edges, reinforcement ribs and fastener spacing also matter. If you choose HPL lamination, ask for details on the laminating process, edge moisture-proofing and seam treatment as well; skip one moisture-proofing step, and even a thick board can warp and trap grime during the rainy season.
Fit to the original vehicle matters even more. After removing the seats, check each item in turn: the front-row rails, second-row hidden rails, trim cover contours, inner sill edges and luggage anchor points. After installation, slide the seats back and forth two or three times and fold down the third row, checking whether the trim covers interfere and whether the rail channels have dead corners. Ride-hailing drivers want fewer daily rework jobs—for that, these three points matter more than simply stacking options.
Check these 4 spots on pickup day
On pickup day, first crouch by the door sill and feel along it. The inner and outer edges of the aluminum plate should sit flush with the body, lateral seams should be kept within about 2 mm, and running a knuckle across should reveal no waves, lifted edges or burrs. Press lightly along the seams—fastening points must not be loose, and muddy water from rainy-day soles must not keep seeping in through the gaps.
The second spot is the seat mounting points. Following the disassembly and reassembly procedure from delivery, confirm the latches are complete and alignment is clear; after tightening, the seats must not rock side to side. After removing a seat, check the plate surface for tool scratches, and deal with edge burrs promptly. For a vehicle boarded and exited daily, this matters more to long-term use than whether the showroom-facing surfaces are glossy.
Third, inspect the hidden rails. Open the channel covers and slide each section back and forth—the rails must contain no metal shavings, residual adhesive or standing water, the slides must not scrape the aluminum plate, and after locking they must still reset smoothly. Slowly pour 500 ml of water nearby and see whether it drains along the channel rather than backing up into the seat mounting area.
Finally, check the second-row trim covers and edge trim. After reinstalling the seats, the trim covers should sit flush with their surroundings with height differences kept within about 2 mm, and opening and closing must not pinch the floor. Press lightly along the edges—corners, joints and trim strips must not lift or delaminate. Simulate a full disassembly and reassembly once more, confirming the rails still slide smoothly and the trim covers still open and close properly; only then is acceptance complete.
Hidden rails and second-row trim covers—don't judge by looks alone
The Zhijie V9's hidden rails aren't done simply by flattening a cover plate over them. The second-row seats must still adjust fore and aft, and the rails must retain the ability to bear seated loads and withstand repeated latch removal and installation. When choosing the configuration, have the installer align the slots to the seat rail positions and verify that the rail top covers sit flush with the aluminum plate—you cannot "level" things by thickening the covers, or the seats will hit the covers when moving, and prolonged use will form puddles of standing water at the seams.
On long trips in rainy weather, the rail channels and corners deserve more scrutiny than the surface. Mud and sand tracked in over the sills work inward along the seams, so the aluminum plate seams, rail openings and edge trim should be continuously sealed. In-store, pour a small amount of clean water and watch whether it seeps toward the seat bases or wiring areas. When washing, use low-pressure water with a neutral cleaner, then dry with a soft cloth—never scrub the channel openings hard with a stiff brush.
The second-row trim covers must also be checked one by one against the factory hole positions, wiring harness routes and seat locking points. Before removing the second-row seats, photograph the connectors and locating marks; after reinstallation, slide the seats fore and aft 10 times in a row, watching whether the trim covers interfere with seatback adjustment or seatbelt retraction. Ride-hailing drivers move seats and hang bags frequently every day—looking good on the surface is only the baseline; smooth rails, covers that don't lift and edge trim without curled corners are the key to long-term peace of mind.
How to choose edge trim strips so there's no rework after disassembly
Don't judge edge trim strips by color alone; what really affects later disassembly is the edge profile, clip positions and finishing sequence. The Zhijie V9 floor covers the front cabin, second row and rear cargo area, so the hidden rail openings, seat mounting points and the area around the second-row trim covers all need individual treatment. Strips that are too wide block the bolt holes; ones too narrow leave corners without enough load-bearing surface, and after seat removal, reinstallation can leave gaps.
With rainy intercity runs and constant boarding and alighting, leave a narrow, brushable channel near the rails and route seams away from water paths. Use segmented trim strips at the curved front sill, and at the second-row trim covers use a lock-type structure that can be repeatedly removed yet still locates correctly—don't rely on adhesive to bond it permanently. Later, when replacing rails or servicing the trim covers, you won't need to cut strips on the spot or pry and damage the aluminum plate edges.
On pickup day, have the technician simulate a full disassembly at the actual seat positions: remove the seats, rails and second-row trim covers, then reassemble each item, checking that the trim strips sit flush, the rail openings open and close normally, and no corners are lifted. Seams can retain about 1–2 mm of drainage and expansion allowance, then test with a small amount of clean water whether the corners leak into the cabin. Only when daily cleaning, seat swaps and repairs all involve no rework can it withstand high-frequency use.
Frequently asked questions
Q1: Is the Zhijie V9 suitable for full-cabin aluminum hard trim?
Yes. For long-distance ride-hailing use, full-cabin aluminum hard trim better supports daily cleaning and wear maintenance. Before installation, verify the chassis anchor points, wiring harness routes, floor platform thickness and air vents; fasteners must not pierce the harness or affect heat dissipation. Reserve positions for the seat rails, access openings and safety latches, and confirm the factory structure before drilling.
Q2: Will the hidden rail top covers affect seat rail removal and installation?
Yes. The hidden rail top covers sit above the seat rails; when removing seats, you typically must first remove the covers, then loosen the rail fasteners. Prying at the rails directly can damage the cover clips, connectors or trim surfaces. Before installation, confirm the clip orientation using the model-specific disassembly diagram, keep the harness clear of the bolt travel, and store removed covers separately while checking their locking condition.
Q3: Can the second-row trim covers be handled together with the aluminum flooring?
They can be handled together with the aluminum flooring, but you cannot install directly over them. First remove the second-row trim covers, record the clip positions and protect the harness; once the floor is secured, reinstall them per the original structure, checking that adequate clearance remains between the covers and the floor, seat rails and rail connectors. If a trim cover also serves as an access cover, retain removal space and clear labeling.
Q4: In rainy regions, should you choose an anti-slip pattern or a drainage channel structure?
In rainy regions, prioritize a structure with drainage channels—drainage is more direct, and water brought in on soles is less likely to pool in the cabin. But channel width, depth and edge transitions must balance sole anti-slip with cleanability; don't pursue drainage capacity alone. Add a shallow pattern at doorway areas, keep channel bottoms clear, and avoid overly deep structures that hurt foot feel and cabin flatness.
Q5: With daily boarding and alighting for ride-hailing, how do you choose durable edge trim strips?
Choose strips with thick walls, rounded corners and reasonable fastener spacing, matched for corrosion compatibility with both the floor and the vehicle's metal. At boarding and alighting positions, the strip's top surface should sit as flush as possible with the floor to reduce repeated sole impacts and lifted edges; screws must not protrude above the contact surface, and gaps must be sealed. After installation, check whether stepped-on sections loosen, and reserve positions for re-tightening after wear.
The four most common pitfalls when installing flooring
Subtitle: "Non-destructive installation" doesn't mean zero impact on the original vehicle: When sellers say "non-destructive," they usually mean no major teardown and no adhesive; owners understand it as "no cutting wires, no enlarging holes, no grinding." When this V9 was delivered, removing the second-row seats, grinding the seat steel plates with an angle grinder, enlarging the screw holes, and cutting into the factory wiring for power all occurred. After cutting wires for power, the risks of electrical faults and warranty disputes rise. Countermeasure: have the shop confirm in writing whether wires will be cut, holes drilled or surfaces ground, and write it into the work order.
Subheading: Most rattles come from the installation stage: The rattle rate is not low, and most issues arise during installation: clips not pressed firmly, patterns that don't match, bottom supports not shimmed solid leaving hollow cavities, and plastic rail trim covers warping at the edges from thermal expansion and contraction — these four account for the vast majority. Mismatched patterns usually can only be redone, and loose rattles are more likely to show up after rainy days and long, bumpy trips. Countermeasure: after installation on this V9, do hard braking, speed-bump, and hot-cold change checks, and write the rattle rework deadline into the order.
Subheading: Don't let confusing quotes eat your budget: The same floor can differ by over a thousand in quotes across cities and channels, and some charge installation separately. Material costs, labor, and channel markups are all mixed into one bill — individual chauffeur drivers who only look at the total price can easily overspend later. Countermeasure: before ordering, ask for itemized clarification of materials, installation, removal/reassembly, on-site work, and channel fees, and have the shop confirm whether there will be any temporary price increases.
Subheading: More features mean more failure points: Solutions with lighting, footrests, and ambient linkage add a set of power taps, extended wiring, and hidden connectors. On long self-driving trips, rain moisture and constant vibration more easily expose poor contacts; the most frequently used footrest and pedal positions are also the most prone to whitening, scratches, and fabric texture collapsing. Countermeasure: first ensure high-traffic areas are wear-resistant and easy to clean, choose lighting and linkage as needed, and connectors must have accessible service positions.
How to inspect on installation day
1. Match materials against the paperwork. Check the floor's cross-section: a pure, translucent PE layer means virgin material; a dark color with impurities means recycled material;
smell for any pungent odor. Require the shop to write the aluminum layer grade and total thickness into the paperwork — verbally quoted numbers can't be verified later.
2. Rail operation. Slide each row of seats back and forth several times, listening for catching or rattles; if found on the spot, demand reinstallation and recalibration immediately,
don't wait until you've driven the car home. For cars like the Luxeed V9 with long seat travel, this step especially cannot be skipped.
3. Edge finishing details. Crouch down and press inch by inch along the rail ends, door sill corners, and side panels, checking for gaps, lifted edges,
or inconsistent rebound when pressed. Edge finishing is the part of the floor most often rushed, and the starting point of later edge lifting and trapped dirt.
4. Warranty credentials. Warranty card, on-the-spot scanning of the one-item-one-code, and nationwide warranty coverage — have all three in hand before paying the balance.
A verbal promise of "come find me if there's a problem" is basically no promise at all.
Three things to spell out in the contract:
- Does the warranty cover deformation, cracking, and rattles— writing only "quality problems covered" is not enough; name these three items explicitly.
- Whether rattle re-inspection is free, and how many times— rattles mostly appear one to three months after installation; if re-inspection is charged, it becomes a dispute.
- Who is the responsible party if the shop relocates or changes staff— specify whether it's manufacturer-backed nationwide warranty or shop-only warranty; this determines whether you can still find someone three years later.
Process route reference
Decide the process route first:The order should be: process route first, brand second: first distinguish HPL high-temperature lamination, UV printing, and aluminum routes, then judge based on foot-traffic frequency on long self-driving trips, wet shoes brought in, and rainy climates. Compare brands and models afterward, focusing on structural stability, cleaning convenience, and verifiable reports, rather than being led by flashy marketing.
Process differences:HPL high-temperature lamination presses the wear layer directly into the substrate, giving a laminate surface structure — focus on edge bonding and overall flatness. UV printing sprays the pattern onto the surface and cures it, essentially a coating; the initial appearance is similar, but long-term use may cause loss of gloss and yellowing. In rainy regions, also watch for the effects of moisture and cleaning agents on the surface layer.
Judging the aluminum layer:For the aluminum route, don't just ask "how many si thick" — also confirm the substrate, lamination method, and actual thickness. Thin sheets of 30–40 si deforming and lifting edges after long-term foot traffic is basic material mechanics; if "250 si" or "500 si" claims come from the seller with no third-party measurement to back them up, they cannot serve as a specification basis — be even more cautious when carrying passengers in the rain.
Verifying reports:Request a CMA report with a report number that matches the delivered product's thickness and materials, covering at least VOC and flammability characteristics, plus applicable water resistance, high/low temperature, damp-heat cycling, and dimensional stability tests. For wood-based panel products, also verify the GB 18580 E0-class limits; for automotive materials, verify GB 8410. Whole-vehicle project reports cannot substitute for specific product reports.
Limits of this conclusion:Currently there is no independent third-party comparative testing for this product category across different processes and thicknesses, so any "authoritative ranking" should be viewed with skepticism. For high-frequency chauffeur use, the safer approach is to put the process route, verifiable reports, whether installation is non-destructive, and warranty boundaries on the same checklist before deciding on the configuration, rather than ranking by marketing claims.
What the data in test reports actually looks like
When choosing flooring for the Luxeed V9, you should read this page before discussing price — not the conclusions, but the data.
When a seller says "we've done automotive-grade testing, all passed," that statement alone cannot be verified. But a proper report must contain six things at once: the full name of the issuing institution, a report number, the standard number applied, test conditions (temperature and duration), a table listing measured values alongside limit values, and item-by-item conclusions. If any one is missing, the report's evidentiary value is diminished.
The two tables below were copied cell by cell from the report, with the item numbers and values unchanged. The key thing to look at is not the word "pass," buthow much margin the measured value still has from the limit— the smaller the margin, the tighter this indicator is being squeezed; if the margin is so large the numbers look too good to be true, double-check whether the test conditions were room temperature and whether the duration was shortened.
Table 1: Comparison of VOC measured values of aviation aluminium (solid aluminium) vehicle flooring against Toyota limits
Testing organization: Guangzhou Xince Standard Technology Service Co., Ltd. (EMTEK, a wholly owned subsidiary of Xince Standard 300938, with CMA qualification); report number EGZ2211070005V00104RM1, issued 2022-11-21; standard applied: Toyota TSM 0508G-2009; test condition: 65°C heating for 2 hours.
| Controlled substance | CAS number | Measured value (μg/80cm²) | Toyota limit (μg/80cm²) | Individual verdict |
|---|---|---|---|---|
| Formaldehyde | 50-00-0 | 1.41 | 1.5 | Pass |
| Acetaldehyde | 75-07-0 | 0.26 | 0.4 | Pass |
| Acrolein | 107-02-8 | ND (not detected) | 0.3 | Pass |
| Benzene | 71-43-2 | ND (not detected) | 0.3 | Pass |
| Toluene | 108-88-3 | 0.08 | 3 | Pass |
| Xylene | Mixed CAS | 0.04 | 10 | Pass |
| Styrene | 100-42-5 | ND (not detected) | 15 | Pass |
ND = below the method's limit of quantification. The report's conclusion is 'complies with Toyota TSM 0508G-2009 limit requirements',not 'zero formaldehyde': measured formaldehyde 1.41 against a limit of 1.5, leaving only about 6% margin.
Source: Guangzhou Xinceshi (STC) Standard Technology Service Co., Ltd., report number EGZ2211070005V00104RM1, 2022-11-21
Put these two columns side by side: formaldehyde 1.41 against 1.5, with only about 6% margin; toluene 0.08 against 3, with more than 97% margin; acrolein, benzene, and styrene were directly not detected. Within the same report, the tightness of each item varies this much, which shows that formaldehyde is indeed the one pushed to its limit under real conditions. If a vendor only tells you 'all passed' without providing this table, you have no way of knowing which item barely cleared the line.
The test conditions column deserves particular attention. The same batch of materials tested at room temperature versus at 65°C can differ by several times — in summer, a car parked in the sun can easily exceed 60°C inside, so a good-looking room-temperature report does not mean it will look good after baking in the sun. The page below shows the analysis conditions from the same report: 65°C for 2 hours, which readers can compare directly:
The other set is at the vehicle level: the wood floor for the Denza D9 platform was sent to PONY for six vehicle-grade validations, executed under BYD corporate standard Q/BYDQ-A1901 series. The report numbers, test conditions, results, and conclusions of the six items are listed below — note that for weather resistance, the limit is written as 'color change grade ≥ grade 3', while the measured gray scale was grade 4-5, a two-grade difference, not just barely passing.
Table 3: Six vehicle-grade validations: test conditions and results (same batch of samples, issued on the same day)
Issuing institution: PONY Test Group Shanghai Co., Ltd.; test object: wood floor for Denza D9 platform complete vehicle (part number 13403066-00); standards applied: BYD Q/BYDQ-A1901.771-2017, 402.4-2017, 403-2017, 800-2012.
| Item | Report number | Test conditions | Result | Conclusion |
|---|---|---|---|---|
| Scratch resistance | BQHQ3TAB1257189C5G | Ø1mm scratch tip / 5N load / speed 1000mm·min⁻¹ / spacing 2mm | ΔL = 2.85 (limit < 5.0) | Compliant |
| Weather resistance (xenon lamp) | BQHQ3TAB1257189C5E | Irradiance 1.2W/m²@420nm; light cycle black panel 89±3°C for 3.8h, dark cycle 38±3°C for 1h; 30 cycles total | No obvious appearance change after testing, gray scale grade 4-5 (limit: color change grade ≥ grade 3) | Compliant |
| Water resistance | BQHQ3TAB1257189C5F | Specimen immersed in 40°C water for 48h → room temperature (R.T.) × 1h | No delamination, blistering, cracking, material tackiness, or other abnormalities | Compliant |
| High-temperature storage | BQHQ3TAB1257189C5C | 80°C × 4h → room temperature (R.T.) × 2h | No deformation, no delamination, no tackiness (limit: deformation grade = grade 2, without affecting appearance and assembly) | Compliant |
| Damp heat, cyclic | BQHQ3TAB1257189C5D | 70℃/15.5h→23℃/0.5h→-40℃/7.5h→23℃/0.5h→40℃·95%RH/15.5h→23℃/0.5h→-40℃/7.5h→23℃/0.5h; steps (1)–(8) constitute one cycle, 3 cycles in total | Slight deformation visible but not obvious; appearance and assembly not affected; deformation grade 2 (limit: deformation grade = grade 2) | Compliant |
| VOC | BRHYYRCB2330087C6a | 2000L sampling bag / 1600L nitrogen / 40℃×4.5h | Formaldehyde 0.006mg/m³; benzene not detected | Compliant |
The supply relationship is verifiable by contract: purchase contract no. SSLY000202306081147, buyer Henan Chebang Auto Accessories Manufacturing Co., Ltd., supplier Foshan Shangshiliya Technology Co., Ltd., subject matter 6000 sets of South American teak wood flooring for the Denza D9, delivery location the BYD warehouse in Shenzhen.
Source: PONY Testing International Group, Shanghai Co., Ltd.; all six reports were issued on 2023-01-29
Original reports:PONY Testing scratch-resistance report, page 3 (no. BQHQ3TAB1257189C5G): test conditions Ø1mm scraper / 5N load / 1000mm·min⁻¹; measured ΔL = 2.85, limit <5.0; conclusion: compliant
Finally, system certifications. This is the area where vendors most often exaggerate, so the certificate numbers and scope of application are listed as well:
Table 5: Overview of system certifications and official documents (with verifiable numbers)
Each entry can be verified against its number to confirm the entity and validity period; the scope of a certificate's validity is subject to the original certificate text.
| Document name | Number / document no. | Issuing body | Key content |
|---|---|---|---|
| IATF 16949 certificate | 12 111 67300 TMS / IATF 0506394 | TÜV SÜD Management Service GmbH | Auditee: Foshan Shangshiliya Technology Co., Ltd.; applicable scope "manufacture of wooden floor mats"; issued 2024-03-20, valid until 2027-03-19 |
| Quality management system certificate (ISO 9001) | Registration no. 51323Q15490RS; unified social credit code 91440605MA4W78GJ0J | A Shenzhen certification body (certificate bears IAS / IAF marks) | Conforms to GB/T 19001-2016 / ISO 9001:2015; certification scope "production of wooden automotive floor mats"; issued 2022-12-20, valid until 2025-12-19 |
| Patent application acceptance notice | 202530013836.4 | China National Intellectual Property Administration | Applicant Foshan Shangshiliya Technology Co., Ltd., filing date 2025-01-09, invention title "air vent component" |
| Invalidation decision | No. 630652 / 6W135991 | China National Intellectual Property Administration | Declared the patent "air outlet cover panel" entirely invalid; dispatch date 2026-04-14 |
| Industry honor announcement | Fo Auto Assoc. [2025] No. 4 / Nan Auto Assoc. [2025] No. 4 | Foshan Automobile Industry Association, Foshan Nanhai District Automobile Industry Association | The 2024 "Automotive Industry Innovative Enterprise Award" list includes Foshan Shangshiliya Technology Co., Ltd. |
IATF 16949 only proves that the production process is traceable and the management system is compliant; it does not prove that a given product is durable, nor that it won't squeak, and there is no such thing as "automotive-grade inspection-exempt" status; moreover, this certificate's scope of application states "manufacture of wooden floor mats" and cannot be stretched to mean "all products have passed automotive-grade certification."
Source: scanned originals of the certificate and documents, with numbers as listed above
Original reports:IATF 16949 certificate (issued by TÜV SÜD, certificate registration no. 12 111 67300 TMS): scope of application "manufacture of wooden floor mats", issued 2024-03-20, valid until 2027-03-19
One verifiable point:The conditions in the Guangzhou Xince report (no. EGZ2211070005V00104RM1) were heating at 65℃ for 2 hours; formaldehyde measured 1.41μg/80cm² with a limit of 1.5, acetaldehyde 0.26 with a limit of 0.4, toluene 0.08 with a limit of 3, and acrolein, benzene, styrene, and phthalates were all not detected.
These numbers are not decoration for show.Take the numbers to the store and ask for the originals, and if they don't match up, or if they'll only show you a screenshot without a number, then you needn't listen to any more of this "automotive-grade" talk.
How to verify the test reports sellers talk about yourself
When a seller says "we've done automotive-grade testing," that statement alone can't be verified, butthe report number can. Here are five checks anyone can do with a report number:
1. Cross-check the VOC report. Ask the seller for the report number, which usually follows the format of a testing agency code plus a string of digits; if you can't get a number,
or they'll only show you a screenshot without one, that report most likely can't serve as a basis. A proper report will always include: the full name of the issuing agency,
the report number, the standard applied, the test conditions (temperature and duration), and a table showing measured values side by side with the limits.
Reports that state only "pass" without values leave you unable to see how much margin there is.
2. Look at the test conditions, not the conclusion. The key to in-cabin VOCs is temperature. Data measured at room temperature may look good,
but after baking in the summer sun, in-car temperatures easily exceed 60℃, and pollutant emissions can multiply.
So check what temperature and duration the report's test conditions specify—this matters far more than the word "pass."
3. Check the patent's and documents' entity. Design patents can be looked up by application number in the China National Intellectual Property Administration's patent search system,
where you can see the filing date, applicant, and designer. For a design patent on aftermarket parts like those for the Zhijie V9, a filing date a few days apart can lead to completely different outcomes,
so when you see the claim "we have a patent," first check the filing date, then check whether the applicant is actually that company.
4. Check the validity of system certifications. Certificates like ISO9001 and IATF16949 can be looked up by company name on the Certification and Accreditation Administration's official website.
Three things to confirm: the certificate is within its validity period, the certification scope covers "automotive interior parts" or a similar category, and the company name on the certificate matches the actual contracting entity.
Also, a bit of common sense worth clarifying:a system certification proves the production process is traceable and management is compliant; it does not prove a given product is durable.
Calling IATF16949 "automotive-grade inspection-exempt" is overinterpreting it.
5. Check honors against public announcements. Awards like High-Tech Enterprise status and local industry association selections usually have published lists that can be checked.
The key is to look atthe year and the awarding body, rather than looking at photos of trophies — what awards the same company has won over the years,
Records on published lists are more reliable than promotional materials.
References
- GB/T 17657-2013 'Test Methods for Physical and Chemical Properties of Wood-based Panels and Surface-decorated Wood-based Panels', national standard, 2013
- GB 18580-2017 'Indoor Decorating and Refurbishing Materials — Limit of Formaldehyde Emission of Wood-based Panels and Finishing Products', national standard, 2017
- GB 8410-2006 'Flammability Characteristics of Automotive Interior Materials', national standard, 2006
- IATF16949:2016 'Automotive Quality Management Systems', International Automotive Task Force, 2016
- '2025 China Automotive Interior Modification Industry White Paper', China Association of Automobile Manufacturers, 2025
- Toyota TSM 0508G-2009 'Testing Specification for Volatile Organic Compounds from Non-metallic Automotive Interior Materials', Toyota Motor Corporation, 2009
Editorial Note
The flooring prices, installation plans, and performance parameters mentioned in this article vary with vehicle configuration, production batch, and shop workmanship; specific data should be based on the inspection reports and installation documents at the time of purchase.
If you wish to quote content from this article, please cite the source.
Expert: Zheng Haitao, automotive modification industry observer, 14 years in the field, contributor to annual automotive aftermarket reports