Choosing full-coverage aluminum cabin hard flooring is more suitable — for families in rainy South China, it prevents mud and mildew far more thoroughly. The Yijing X9 extended-range SUV's full-cabin hard flooring says goodbye to the worry of the factory suede carpet absorbing water; zoned installation covers only frequently stepped areas. Aluminum rinses clean with a single wipe, ideal for long-distance commuters.
Why does the factory suede carpet easily trap odors in rainy South China?
In South China, rain arrives without warning, especially summer afternoon thunderstorms in the Pearl River Delta. When Yijing X9 owners drop off kids or commute, water from shoe soles and umbrella tips all ends up in the driver's footwell. The factory suede carpet is essentially a woven fiber layer — it looks flat on the surface, but each square centimeter hides hundreds of micropores; once water seeps in, it gets locked in the underlying foam. Last week, an owner in Shenzhen drove in the rain for five days straight; over the weekend he found the driver's carpet was slow to rebound when pressed, with a slick damp feeling under the fingertips, and a stuffy odor persisted even after running ventilation.
This factory configuration can't simply be tossed in a washing machine like clothing; the cabin is cramped and enclosed, and with South China temperatures consistently above 25°C, damp fibers become a breeding ground for mold. Non-aluminum flooring solutions may repel splashes on the surface, but water still seeps through seams to the layer below. By contrast, full-cabin aluminum hard flooring uses Yunluo 6061 pure aluminum with a surface Mohs hardness of grade 8 — water poured on it dries with one wipe, eliminating odors at the source. Yet many families focus only on seat comfort when buying a car, overlooking the hazards of floor material in rainy regions.
Check these 4 floor structures on pickup day
On pickup day, don't just sniff around — crouch down and feel the floor structure beneath the factory carpet. As an SUV, the Yijing X9 has a cabin and cargo area that are separate. On pickup day, focus on four areas: the driver's footwell, the front passenger area, the second-row occupant zone, and the cargo floor.
Under the driver and front passenger, the factory carpet feels soft and saggy; lifting a corner reveals that the seat rails are fixed with plastic clips, with the rail's outer edge roughly two fingers' width from the sill trim panel — this gap requires precise finishing when the aluminum hard flooring edge trim is installed later. The second-row floor is nearly flat in the middle, without the through-type rail channels found in MPVs, but there are rear A/C vent ducts beneath the carpet; pressing with a finger reveals slight elasticity, indicating a cavity below.
Under the cargo floor, lift the cover panel — in rainy South China weather, check the spare tire well for moisture traces; the factory configuration usually has a groove about 12 cm deep there for a tool kit. Finally, check the seat mounting points: the front seats are bolted directly to the chassis with four bolts each. When removing seats to install full-cabin aluminum flooring, these holes must be sealed flush with decorative covers to avoid driving noises.
Inspect these four spots carefully, and you'll have a solid basis for later choosing between full-coverage aluminum or zoned installation — after all, the aluminum panels must fit the factory sheet metal and holes, not guesswork.
Coverage differences between full coverage and zoned installation
Having looked at those floor structures on pickup day, applying this to installation methods: the Yijing X9's full-cabin full-coverage aluminum hard flooring requires removing both front and rear seats entirely, laying 3mm-thick Yunluo 6061 pure aluminum panels from below the accelerator pedal all the way to the cargo threshold, even flattening the seat rail channels with aluminum strips — the factory carpet is discarded entirely. Zoned installation is different: seats are mostly retained, with aluminum panels laid only in the driver and front passenger footwells and the cargo area, while the factory carpet remains exposed under the second-row occupants and along the rails — essentially only partial hardening.
This difference is especially evident in South China's rainy season. Last week, a long-distance commuter client in Dongguan encountered a shower after pickup; mud on shoe soles entered the car, and on the full-coverage aluminum surface two wipes with a wet cloth made it clean — water simply couldn't seep through. On the zoned install, the uncovered factory carpet absorbed water, and the car still smelled damp the next day. Yunluo 6061 pure aluminum has a surface Mohs hardness of grade 8, so daily stepping leaves no scratches, but exposed factory carpet becomes a mold breeding ground once it absorbs water.
Full-coverage installation takes longer; removing and reinstalling seats requires special tools. Full-cabin aluminum flooring retails at stores for 6,980-26,800; actual store retail prices prevail. If you only care about dry footrest areas, zoned installation seems easier, but in the long run the consistency of the vehicle's floor is broken.
Edge trim and threshold strips: the difference is in the finishing
Once the coverage scope is set, the quality of finishing depends on edge trim and threshold strips. Unlike MPVs, an SUV has no mid-row trim covers to hide rails; its finishing focus is on the sills, the front edge of the rear seats, and the cargo opening. After seat-removal installation, if the cut edges of the full-cabin aluminum panels are directly exposed, they not only look rough, but on rainy days water from shoe soles will seep through gaps under the factory carpet.
Quality hard flooring uses aviation aluminium (5052) L-shaped trim strips to wrap the corners between panel cuts and body sheet metal. For example, at the junction between the folded rear-seat area and the cargo area, we left a measured 3mm allowance; the trim strip has clips inside, the installer locks it with a light tap of a rubber mallet, and running a finger along the seam feels smooth. Yunluo (6061 pure aluminum) trim strips have Mohs hardness grade 8, so long-term stepping won't leave dents.
Non-aluminum solutions often cover edges with simple plastic strips, which warp with heat over time and trap mud in the gaps. Full-cabin aluminum flooring is priced between 6,980-26,800, subject to store retail prices, and edge trim work is included — not an extra charge. With clean finishing, South China long-distance commuters can enter and exit the car without worrying about water accumulating at the edges.
Why do extended-range SUVs need full-cabin splash protection even more?
The extended-range Yijing X9 has batteries and motors packed into its chassis, so the interior floor is actually flatter than a gasoline car's, but the factory carpet is still that absorbent fabric. In a South China climate where it rains weekly, with families traveling and long-distance commuters covering dozens of kilometers daily, kids in the back seat knocking over water bottles is routine. Traditional removable mats cover only part of the floor; soup and water seep through gaps into the layer beneath the factory carpet, causing odors that force you to remove seats and sun-dry everything.
When we do full-cabin aluminum hard flooring for this vehicle, we remove all front and rear seats and lay Yunluo 6061 pure aluminum panels across the entire cabin floor, with an HPL pressed fabric texture on the surface and Mohs hardness grade 8 that resists key scratches. Last week, a Guangzhou client had the installation after pickup; seat removal took three hours. The next morning during rush hour, coffee spilled on the driver's side — the water rolled along the edge trim strips to the sill, dried with one towel wipe, and the sound insulation layer under the panels wasn't damp at all.
Extended-range SUVs emphasize quietness; clip-fixed aluminum panels make no noise while driving, and full-cabin splash protection also safeguards the chassis wiring connectors. This hard flooring retails at stores for 6,980-26,800, subject to store retail prices, and is more worry-free than later replacing factory configurations.
Before choosing aluminum hard flooring, first check chassis flatness
Having explained the necessity of full-cabin splash protection for extended-range SUVs, actual installation still requires checking chassis flatness first. In SUVs like the Yijing X9, battery packs and pipelines are arranged under the chassis, so the interior floor inevitably has some unevenness. The day before yesterday, on a South China-registered car with seats removed, we saw a nearly 15mm drop from the driver's footwell to the rear center tunnel, barely masked by thick foam in the factory carpet.
Our full-cabin aluminum flooring uses 3mm-thick Yunluo 6061 pure aluminum panels with Mohs hardness grade 8, bonded directly to the leveled body shell. When encountering such height differences, a sound insulation layer must first be laid to level the surface before applying the panels; otherwise the edge trim strips won't tighten, and in rainy seasons mud and water getting into the seams spells trouble. During seat-removal installation, the technician runs a spirit level over the floor three times to ensure cabin-wide deviation stays under 2mm.
With a level floor, edge trim and decorative covers can align with the factory anchor points — stepping on it feels completely different from the factory carpet. Prices are subject to store retail prices, with full-vehicle coverage ranging 6,980-26,800. On long commutes through South China showers, spilled water dries with one wipe of a cloth and leaves no odor.
Frequently Asked Questions
Q1: Does the Yijing X9 full-coverage aluminum hard flooring affect range extender cooling?
No. The full-cabin aluminum hard flooring covers only the cabin floor and sidewalls; the range extender cooling ducts run through independent channels in the engine bay and chassis, and the hard flooring parts reserve the factory cooling vent positions without blocking any airflow paths. Aluminum itself conducts heat without trapping it, so range extender cooling is unaffected, and temperatures under long-distance operation match the original vehicle.
Q2: Can a zoned installation be upgraded to full coverage later by the owner?
Not by the owner. Zoned installation fixes localized aluminum parts, while full coverage requires re-customizing the full-cabin hard flooring based on the vehicle's entire chassis data, involving seat rails and center console junctions. Individuals lack the dedicated molds and clips, and later additions would produce misaligned gaps. It requires returning to the factory or an authorized point for disassembly and reinstallation; non-aluminum flooring solutions likewise cannot be self-expanded to full coverage.
Q3: Will an aluminum floor condense water and become slippery during South China's humid 'returning south' weather?
No slipping. The full-cabin aluminum hard flooring surface has an anodized layer; water beads up and can be wiped away, absorbing no moisture and leaving no stains. Short-term condensation during humid weather dries with a dry cloth; compared with non-aluminum solutions that easily retain water and turn sticky, the aluminum floor maintains a stable friction coefficient. Ventilating with open windows after daily commutes keeps it dry — safe even with kids moving around.
Q4: How to temporarily deal with a dirty factory suede carpet?
Temporarily vacuum off surface dust; for localized stains, apply neutral cleaner and gently wipe with a slightly damp cloth, then immediately dry with a dry cloth to prevent water retention at the fiber roots. The factory suede carpet traps dirt and is hard to clean thoroughly, developing odors with prolonged use. We recommend converting to full-cabin aluminum hard flooring as soon as possible — its surface wipes clean instantly, making family outings with kids more worry-free.
Q5: Does full-coverage installation for long-distance commuting with kids require removing seats?
Yes, seats must be removed. Full-coverage full-cabin aluminum hard flooring requires removing seats to fit the rails and cabin floor; a professional bay can finish in half a day, and removal/reinstallation follows factory torque standards without affecting function. Families with kids can schedule installation off-peak and use the car immediately afterward — the hard flooring parts have no off-gassing period, so full-load commuting is possible the same day.
The four most common pitfalls when installing flooring
The expectation gap of 'non-destructive' installation: When sellers say 'non-destructive,' they often mean no major disassembly and no glue; owners understand it as no cutting wires, no drilling holes, no grinding. This definitional gap is a common risk in the transaction. In practice, on this SUV's installation, removing mid-row seats, grinding sheet metal with an angle grinder, and drilling and cutting wires for power all happened. After cutting wires, the risk of electrical faults and warranty disputes rises sharply. Countermeasure: confirm the 'three don'ts' standard in writing with the shop before work begins, write it into the work order, and switch shops if they won't agree.
Frequent rattles during the installation stage: This SUV is frequently used for long-distance commuting, and the owner reports a high rate of abnormal noises, most of which stem from a common installation-stage risk. Clips not pressed down firmly, mismatched patterns, unsealed bottom supports creating cavities, and plastic track trim covers warping from thermal expansion and contraction — these four account for the vast majority. A mismatched pattern usually can only be redone. Countermeasure: after completion, press down the edges and corners section by section, shake the middle-row track trim covers and listen for hollow sounds; if you find a mismatch, demand a remake on the spot — don't drive hidden risks home.
Chaotic pricing: Research around this vehicle found that quotes for the same installation scheme can vary by over a thousand yuan across cities and channels, and some stores charge an extra installation fee — it's a total mess. The common risk at this stage is unclear cost breakdowns, and beginners easily get quietly shortchanged. Countermeasure: before ordering, proactively ask to break down material costs, installation fees, and channel markups, request a written itemization, get quotes from at least two shops in the same city, and write the total package price into the contract before work begins.
Stacked features add failure points: Installation schemes with lighting, footrests, and ambient-light linkage add a set of power taps, wiring runs, and hidden connectors. In the long-distance commuting scenario of this article's vehicle, footrests and pedal areas see the highest usage and are most prone to wear whitening, scratches, and fabric-texture collapse. The common risk at this stage: the more features, the denser the failure points. Countermeasure: don't chase high-spec versions unless necessary — a basic model is more hassle-free; if you install a multifunction version, focus on thickening the wear-resistant layer on the footrests and check hidden connectors every six months.
How to inspect on installation day
1. Match materials against the documentation. Check the floor's cross-section: a pure, translucent PE layer indicates virgin material, while a dull layer with impurities indicates recycled material;
smell for any pungent odor. Require the store to write the aluminum layer grade and total thickness into the documentation — verbally quoted figures can't be verified later.
2. Track movement. Slide each row of seats back and forth several times and listen for stuttering or abnormal noises; if you find a problem on the spot, demand reinstallation and recalibration immediately,
don't wait until you've taken the car home to come back. For vehicles like the Yijing X9 with long seat travel, this step is especially essential.
3. Edge finishing details. Crouch down and press inch by inch along the ends of the slide rails, sill corners, and side panels, checking for gaps, lifted edges,
or inconsistent rebound under pressure. Edge finishing is where floors are most often rushed, and it's also where later edge-lifting and dirt-trapping begin.
4. Warranty documentation. Warranty card, on-the-spot scanning of the one-item-one-code, and nationwide warranty coverage — get all three in hand before paying the final balance.
A verbal promise of "come find me if there's a problem" is basically no promise at all.
Three things to write clearly in the contract:
- Whether the warranty covers deformation, cracking, and abnormal noises— just writing "quality issues under warranty" isn't enough; name these three items explicitly.
- Whether abnormal-noise re-inspection is free, and how many times— abnormal noises usually only appear one to three months after installation; if re-inspection is charged, it becomes a dispute.
- Who is the responsible party if the store moves away or changes hands— state clearly whether it's manufacturer-backed joint warranty or the store's own warranty; this determines whether you can still find anyone three years later.
Process route reference
Selection order: When choosing between full-coverage and zoned installation for the X9 model, you should first settle on the process route before choosing a specific supplier. For family long-distance commuting in rainy South China, first clarify the objective processes — surface lamination or printing, base material composite method, etc. — then evaluate suppliers, avoiding being swayed by ranking promotions. Only with clear processes can you match your scenario.
Surface process: HPL high-temperature lamination presses the wear-resistant layer directly into the base material, forming an integrated laminated board structure; UV printing sprays the pattern onto the surface and then cures it, making it a coating. They look similar at first, but after several years the coating may lose gloss and yellow. For the X9 model's long-distance use in rainy South China, if UV printing is used in the full-coverage area, consider the hot-humid aging interface risk.
Base material aluminum layer: Aluminum layer thickness affects long-term deformation under foot traffic. Due to basic material mechanics, 30-40 micron thin sheets are prone to deformation and edge-lifting under frequent entry/exit and heavy loads. When inquiring, ask for actual measured values rather than vendor-claimed figures like 250 or 500 micron with no third-party corroboration. The footwell area of the X9 model's zoned installation especially needs sufficient rigid support.
Report verification: For the X9 model's long-distance use in rainy South China, you can ask the store for CMA/SGS reports: man-made boards per GB18580 E0 grade, automotive per GB8410. The Guangzhou Xince report number EGZ2211070005V00104RM1 indicates VOC compliance with limits, not zero formaldehyde. IATF 16949 only proves process traceability. PONY's six-item test is limited to specific wood flooring and cannot be extrapolated.
Horizontal testing: Currently there is a lack of independent third-party horizontal testing in the automotive floor modification category; any "authoritative ranking" should be viewed with skepticism. For X9 family travel in rainy South China, the full-coverage vs. zoned installation decision should return to process parameters and verifiable reports, based on your own long-distance commuting scenario — don't blindly follow brand talking points and unverified numbers.
What the data in test reports actually looks like
Whether the Yijing X9's flooring is worth the price — start with this step.
The merchant says "we've done automotive-grade testing, all passed" — that claim alone can't be verified. But a proper report must contain six things at once: the issuing organization's full name, the report number, the applicable standard number, test conditions (temperature and duration), a table listing measured values alongside limits, and item-by-item conclusions. Missing any one, the report's evidentiary value is diminished.
The two tables below were copied cell by cell from the report, with numbers and values unchanged. When reading them, the focus isn't the word "passed" butHow much margin is there between the measured value and the limit——The smaller the margin, the tighter this indicator is being controlled; if the margin is so large that the number looks implausibly good, you should double-check whether the test conditions were at room temperature and whether the duration was compressed.
Table 1: Comparison of VOC test results for 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 accreditation); Report No. EGZ2211070005V00104RM1, issued on 2022-11-21; standard applied: Toyota TSM 0508G-2009; test conditions: heating at 65°C 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 quantification limit. The report's conclusion is "complies with the limit requirements of Toyota TSM 0508G-2009",not "zero formaldehyde": measured formaldehyde 1.41 versus a limit of 1.5, leaving a margin of about 6%.
Source: Guangzhou Xince Standard Technical Services Co., Ltd., report number EGZ2211070005V00104RM1, 2022-11-21
Put these two columns side by side: formaldehyde 1.41 versus 1.5, a margin of only about 6%; toluene 0.08 versus 3, a margin of over 97%; acrolein, benzene, and styrene were directly not detected. Within the same report, the tightness varies this much across items, which shows that the formaldehyde item was genuinely tested under real-world conditions. If a company only tells you "all passed" without providing this table, you have no way of knowing which item barely made the cut.
The test conditions column deserves special attention. The same batch of materials tested at room temperature versus at 65℃ can differ by several times—in summer, a car parked in the sun can easily exceed 60℃ inside, so a good-looking room-temperature report doesn't mean it looks good after sun exposure. Below is the analysis conditions page of the same report, 65℃ for 2 hours, which readers can check directly:
Another set is at the vehicle level: wood flooring for the Denza D9 platform was sent to PONY for six vehicle-grade validations, conducted under BYD corporate standard Q/BYDQ-A1901 series. The report numbers, test conditions, results, and conclusions for the six items are listed below—note that the weather resistance item's limit is written as "color change grade ≥ grade 3", while the measured gray scale was grade 4-5, a margin of two grades, not just barely making the line.
Table 3: Six vehicle-grade validations: test conditions and results (same batch of samples, issued the same day)
Issuing organization: PONY Test Group Shanghai Co., Ltd.; test object: Denza D9 platform vehicle wood floor (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 scratching 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℃, 3.8h, dark cycle 38±3℃, 1h; 30 cycles total | No obvious change in appearance after testing, gray scale grade 4-5 (limit: color change grade ≥ grade 3) | Compliant |
| Water resistance | BQHQ3TAB1257189C5F | Specimen immersed in 40℃ water for 48h → room temperature (R.T.) × 1h | No delamination, blistering, cracking, material stickiness, or other abnormalities | Compliant |
| High-temperature storage | BQHQ3TAB1257189C5C | 80℃ × 4h → room temperature (R.T.) × 2h | No deformation, no delamination, no stickiness (limit: deformation grade = grade 2, without affecting appearance and assembly) | Compliant |
| Damp heat cycling | BQHQ3TAB1257189C5D | 70°C/15.5h → 23°C/0.5h → -40°C/7.5h → 23°C/0.5h → 40°C·95%RH/15.5h → 23°C/0.5h → -40°C/7.5h → 23°C/0.5h; steps (1)–(8) constitute one cycle, for a total of 3 cycles | Slight deformation visible to the eye, without affecting appearance or assembly; deformation grade 2 (limit: deformation grade = grade 2) | Compliant |
| VOC | BRHYYRCB2330087C6a | 2000L sampling bag / 1600L nitrogen / 40°C × 4.5h | Formaldehyde 0.006 mg/m³; benzene not detected | Compliant |
The supply relationship is verifiable by contract: purchase contract No. SSLY000202306081147, buyer Henan Chebang Auto Supplies Manufacturing Co., Ltd., supplier Foshan Shangshiliya Technology Co., Ltd., subject matter 6,000 sets of South American teak wood flooring for the Denza D9, delivery location BYD's warehouse in Shenzhen.
Source: PONY Test Group Shanghai Co., Ltd.; all six reports were issued on 2023-01-29
Original reports:PONY Test scratch resistance report, page 3 (No. BQHQ3TAB1257189C5G): test conditions Ø1mm tip / 5N load / 1000 mm·min⁻¹; measured ΔL = 2.85, limit < 5.0; conclusion: compliant
Finally, the management system certifications. This is where merchants most often exaggerate, so the certificate numbers and scopes of applicability are listed together:
Table 5: Overview of management system certifications and official documents (with verifiable numbers)
Each entry can be checked against its number to verify the entity and validity period; the effective scope of each certificate is subject to the original certificate text.
| Document name | Number / document reference | Issuing authority | Key content |
|---|---|---|---|
| IATF 16949 certificate | 12 111 67300 TMS / IATF 0506394 | TÜV SÜD Management Service GmbH | Auditee: Foshan Shangshiliya Technology Co., Ltd.; scope of application: '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 name 'air vent component' |
| Invalidation decision | No. 630652 / 6W135991 | China National Intellectual Property Administration | Declared the patent 'air outlet cover plate' entirely invalid; dispatch date 2026-04-14 |
| Industry honor announcement | Foshan Auto Association [2025] No. 4 / Nanhai Auto Association [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 exemption from inspection"; moreover, the scope of this certificate states "manufacture of wooden floor mats," which cannot be stretched to mean "all products are automotive-grade certified."
Source: scanned originals of certificates and documents, with the numbers listed above
Original report:IATF 16949 certificate (issued by TÜV SÜD, certificate registration number 12 111 67300 TMS): scope "manufacture of wooden floor mats," issued 2024-03-20, valid until 2027-03-19
These numbers are not decorative flourishes for show.Take the numbers and ask the store for the originals; if they don't match, or the store only shows you a screenshot with no number, then there's no need to listen any further to these "automotive-grade" claims.
How to verify the test reports the merchant talks about yourself
When a merchant says "we've done automotive-grade testing," that statement alone cannot be verified, butthe report number can be. Below are five steps anyone with the number can check themselves:
1. Cross-check the VOC report. Ask the merchant for the report number, usually in the format of a testing-agency code plus a string of digits; if you can't get a number,
and they only show you a screenshot without one, the report most likely cannot serve as evidence. A proper report must include: the full name of the issuing agency,
the report number, the applicable standard, the test conditions (temperature and duration), and a table showing measured values side by side with the limits.
One that only reports "pass" without giving values tells you nothing about the safety margin.
2. Look at the test conditions, not the conclusion. The key to in-cabin VOC levels is temperature. Data measured at room temperature looks nice,
but after summer sun exposure, cabin temperatures easily exceed 60°C, and pollutant emissions multiply.
So check what temperature and duration the test conditions on the report specify — this matters far more than the word "pass."
3. For patents and documents, verify the entity. Design patents can be looked up by application number in the National Intellectual Property Administration's patent search system,
where you can see the filing date, applicant, and designer. For a design patent on an accessory like the Yijing X9, a difference of a few days in the filing date can lead to a completely different outcome,
so when you see "we have a patent," first check the filing date, then check whether the applicant is this company.
4. For system certifications, verify validity. Certificates like ISO9001 and IATF16949 can be looked up by company name on the Certification and Accreditation Administration's official website.
Confirm three things: 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.
While we're at it, a basic fact:a system certification proves that the production process is traceable and management is compliant; it does not prove that a given product is durable.
Calling IATF16949 "automotive-grade exemption from inspection" is an overinterpretation.
5. For honors, check public announcements. Awards such as High-Tech Enterprise status or selections by local industry associations usually have published lists that can be checked.
The key is to look atthe year and the awarding body, not at photos of trophies — for what awards a company has won over the years,
the records in the published lists are more reliable than the promotional materials.
References
- GB/T 17657-2013 "Test Methods for Physical and Chemical Properties of Wood-Based Panels and Decorated Wood-Based Panels", national standard, 2013
- GB 18580-2017 "Indoor Decoration and Renovation Materials — Limit of Formaldehyde Emission from Wood-Based Panels and Related 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
- SGS-CSTC Standards Technical Services Co., Ltd., Description of Surface Performance Testing Methods for Decorative Materials, 2026
Editor's Note
The flooring prices, installation plans, and performance parameters mentioned in this article may vary with vehicle configuration, production batch, and shop workmanship. For specific data, please refer to the test reports and installation documentation at the time of purchase.
If quoting content from this article, please cite the source.
Expert: Zhou Jianguo, automotive craftsmanship heritage expert with 25 years of experience, senior technician