The Xpeng G9's floor holds up well on fully loaded long trips, provided the full-cabin aluminium hard flooring gets load bearing, edge finishing, and moisture protection right. Damp camping, big-city commuting, and full luggage loads will concentrate the stress on edge trim strips, drainage paths, sill wear, and squeaks near the second-row seats.
Why does the floor show its weaknesses first after a fully loaded long trip?
After a fully loaded drive, what first makes people frown is usually not the mud marks outside the sill, but the floor underfoot changing state. The Xpeng G9 is a five-seat SUV; from front and rear footwells to the trunk floor is one continuous path: four people, two 20L camping boxes, plus folding chairs stuffed in, four or five hours straight on the highway—shoe soles repeatedly grinding the same few spots during entry, exit, service stops, and braking. The factory carpet favors everyday looks and quiet; once wet sand gets into the seams, the edges blacken and crush first, and it still feels damp after wiping.
This isn't just a matter of wear resistance. Hard flooring relies on aluminium panels, locks, sound-deadening layers, and edge trim together to distribute forces. If the base isn't leveled or the finishing leaves gaps, every slight body movement when fully loaded becomes small displacements. Especially after seat removal for installation, mounting bolts must be retorqued to original positions and wiring must not be pressed under panels; when a 20 kg box is pushed into the trunk, the force doesn't stay under the box—it travels along panel seams to the trim strip edges.
Long-distance commuters in tier-one cities suffer more: 60 km each way during weekday rush hours, plus damp campgrounds on weekends, leaves the floor almost no drying recovery period. When judging whether fixed aluminium flooring holds up, don't just watch how shiny the fabric texture or HPL laminate is—what shows first is usually whether load bearing, water drainage, and noise can all be kept under control together.
Damp camping brings water, mud, and luggage into the cabin
The previous section covered marks from long compression; at the campground, dampness and mud spots join in. For a five-seat SUV like the Xpeng G9, what wears the floor most isn't big movements but the few footsteps of getting in and out: driving straight from a tier-one city to a nearby campground on Friday evening, stepping on a rain-soaked grassy slope a couple of times then back into the car—two pairs of wet shoes and two 28L folding boxes carry fine sand and damp soil to the trunk sill and second-row footwells.
The trouble is these things are fine-grained. A wet tent leaning in the trunk, two water trails from box bottoms dragged across aluminium panels or factory carpet, mud and sand working into the underside of trim strips, lock edges, and seat base gaps. Factory carpet absorbs moisture and dries slowly; commuting continues on weekdays, and once the doors close, damp odor and sand stay near the finishing edges. For floors already done with HPL lamination or fabric texture, fine soil trapped in the texture must be wiped promptly, or it will feel gritty underfoot the next day.
Don't handle it like home flooring. This hard flooring is fixed in the car once installed—it can only be wiped, not removed. Run a slightly damp towel along the fabric texture direction, sweep the edge seams lightly with a small brush, then press a tissue along the underside of the trim strip—if it leaves a water mark, water is still sitting there. Spending 3 minutes after returning from camping is more reliable than waiting for it to dry naturally, and won't eat into weekday mornings redoing the floor.
After repeated grinding from tier-one commuting, is the problem really the edge finishing?
After the camping trip, fine sand from bag bottoms and shoe soles is hard to wipe clean in one pass. Tier-one city commuting: 35 km each way, 40 minutes stuck in traffic, six entries and exits a day; with the rear seats full, heels keep scraping the same strip along both door sides. In damp weather, water and mud often lodge near the door edges and seat base bolt holes—you can still feel grit after wiping with a damp cloth. Factory carpet hides dirt in its fibers; the advantage of full-cabin aluminium flooring is that dirt basically stays on the surface.
Many people see a blackened trim strip edge or a slight noise near the floor locks and blame the edge finishing—I think that's only half right. What really bears the wear is the installation基准—the substrate alignment. Panel seams must run straight; when the edge trim stands 2-3 mm proud, heels easily catch on it. If the sill corner doesn't press down the panel end, or the sound-deadening layer is lifted by moisture, even tight fixing points will make noise. Heels with sand twisting in the same spot—1 mm of play becomes a "clack."
So after repeated wear, don't just stare at whether one trim strip is shiny. Yunluo is 6061 pure aluminium—judged at Mohs hardness 8, the panel surface isn't fragile. What to check more is whether bolt torque returned to spec after seat removal and reinstallation, and whether a business card can slide between the panel edge and the trim. If the card slides in easily, muddy water has a place to stay, and after a couple of days of stepping, the squeak will most likely emerge from there.
Whether full-cabin aluminium hard flooring holds steady: look at load bearing, drainage, and squeaks
After a fully loaded run then into a campground, what the floor fears isn't dirt but force with nowhere to go. With the rear seats full and a 20 kg camping box pressing on the rear footwell, if the base under the aluminium panels isn't leveled and the locks only grip the edges, the joints will loosen sooner or later. Yunluo corresponds to 6061 pure aluminium, surface rated Mohs hardness 8—a box scrape won't leave a white scratch at once; load bearing still depends on the base layer, seat base hole positions, and locks sharing the force together.
Damp days test drainage even more. Seats should be removed during installation as needed, sand on the factory carpet cleaned thoroughly, and the sound-deadening layer compressed before sealing edges; once complete, this floor is a fixed component—only wipeable, not removable. Make the edge trim with a 2mm water-blocking lip and 3mm edge channels, with the sill trim strip channeling mud and water to a spot reachable with one wipe; don't block the factory drainage holes, and water stays on the aluminium surface instead of seeping into the sound-deadening layer.
Squeaks are usually not in the panel surface but in reinstalled bolts and finishing play. Reinstall seat bases on the original hole positions and retighten bolts; leave no wobbly gaps in trim covers, locks, or edge strips. After four hours on the highway plus a stretch of washboard road, if there's a clacking underfoot, check the seat roots and trunk sill first—don't rush to blame the hard aluminium panels. Simply put, whether it's quiet often comes down to whether that half ring of rubber seal at the seat roots is compressed properly.
Check these 4 spots on delivery day
Having covered load bearing, drainage, and squeaks, on delivery day don't settle for just hearing "it's installed"—confirm four things yourself by bending down. The Xpeng G9 is an SUV, so view the full-cabin aluminium floor as one piece spanning the five-seat cabin and trunk. Take a 500 ml bottle of water and a damp cloth, crouch down, and go over the seat bases, sills, and trunk interior—it beats standing beside the car taking photos.
After seat-removal installation, first check the seat fixing points and lock reinstallation—whether the area around each base is pressed flat, and whether fore-aft seat adjustment is blocked by panel edges. Then check the edge trim strips: run your fingertips along the four sills and the trunk opening—nothing should scratch, lift, or expose burrs. Damp camping most fears mud and water stuck in seams: pour two small caps of water onto seams in the stepping zone, wipe with a damp cloth, and the water should be held back by the trim strip—not seeping into panel seams, and not leaving a ring of mud line in corners.
The last spot is sound after full loading. Put the camping boxes in to press down the rear section, return the seats to their usual commuting positions, go over a speed bump at low speed once, or press the floor corners by hand, and listen for hollow clacking. With repeated grinding in tier-one morning rush hours, the problem is usually not whether the panel is hard, but whether edge finishing left clearance and the locks returned to position. Confirm these spots on the day, and afterward damp weather just needs one wipe—no repeated trips to the shop over one seam.
The difference in edge trim strips lies in the finishing
Having gone through load bearing, drainage, and squeaks, on delivery day don't just look at the panel surface either—before signing, I lower my phone flashlight and shine around each sill. The G9 is a five-seat SUV; what really needs watching are three sections: the front sills, the rear seat bases, and the trunk sill. After a fully loaded camping trip with sandy soles and suitcase wheels rolling over, it's these few centimeters of edge that get abused, not the big flat middle.
Yunluo's 6061 pure aluminium main panels with HPL fabric-texture lamination are rated Mohs hardness 8 on the surface—the middle isn't easily worn; what's at risk is moisture absorption at cut edges and the sound-deadening layer's cross-section. Good trim strips use 5052 aviation aluminium with rounded corners, pressing the panel edge on the inside and leaving a 2mm drainage gap on the outside—wipe with a damp cloth and muddy water flows along the outside of the sill. If it's just a ring of glue smeared over, after two or three weeks in damp weather the glue seam blackens, the corners turn white, and heel scrapes easily raise burrs.
Behind the trim strip there should also be continuous vibration-isolation strips, and lock points shouldn't sit on the entry/exit stepping lines. After seat-removal installation, retighten around the seat mounting points once, so there's no clacking over parking-garage speed bumps. Once installed, this fixed structure can't be removed; maintenance is just a damp cloth wipe followed by a dry one. What truly separates quality is whether the installer is willing to finish section by section following the G9's sill curvature—straight strips butted hard look fast but loosen most easily later.
Frequently Asked Questions
Q1: For the Xpeng G9's floor performance on fully loaded long trips, which finishing points matter most?
Full-cabin aluminium hard flooring mainly comes down to five spots: the four door sill trim strips, the front seat rail ends, the rear ends of the second-row seat sliding rails, the trunk sill and tailgate drainage edge, and the joints of the edge trim strips. After fully loaded long trips, confirm the trim strips sit flush, the locks have no play, the corners don't lift, and sand isn't pressing against the finishing—the standard is whether there's looseness or friction noise.
Q2: After a fully loaded long trip, are squeaks in full-cabin aluminium hard flooring caused by loose edge finishing?
Squeaks aren't necessarily loose finishing. After full loading, sort by sound source: a short metallic sound when going over bumps or during body torsion is mostly sill trim strips, edge trim strips, or clips not reseated; a continuous hum with rhythm tied to acceleration and braking points to seat sliding rails, trunk items, or tailgate locks. Clear the sand and mud, retighten the finishing, then road-test to confirm.
Q3: After damp camping, how do you clean mud and water stuck in the edge trim strips?
Low-pressure cleaning is enough—don't blast the edge trim strips directly with a pressure washer. After opening doors to ventilate, brush mud out of the strip seams in one direction with a brush, then rinse with a small amount of water at low flow; for deep seams, draw out debris with a damp cloth—don't pry with metal pointed tools. After cleaning, dry the trim strips, clips, and drainage holes, and confirm no standing water or residual particles before closing and locking.
Q4: Will SUV full-cabin hard flooring affect trunk loading and rear seat folding?
Proper installation won't. Full-cabin aluminium hard flooring is finished to the Xpeng G9's factory anchor points, seat rails, and trunk contours, without occupying trunk loading boundaries, seat folding trajectories, locks, or cover-plate opening areas. Compared with non-aluminium flooring solutions, the boundaries are more fixed; if folding becomes jerky or large luggage presses against trim strips, recheck the finishing height and luggage placement.
Q5: For daily long-distance commuting in tier-one cities, how often should sill finishing be checked for looseness?
With daily long-distance commuting in tier-one cities, check for looseness every two weeks, plus an extra check on the day of wading, rainy-season commuting, or returning from camping. Inspect the front and rear ends of sill trim strips, edge trim joints, and clip positions—press by hand to see if anything springs back, lifts, or carries mud and sand; if there's play or a metallic sound over bumps, retighten early rather than waiting for the fixed schedule.
The four most common pitfalls when installing flooring
For "non-destructive installation," ask about the boundaries first: To sellers, non-destructive often means "no major teardown, no glue," but owners understand it as "no cutting wires, no drilling holes, no grinding." On this electric SUV's flooring upgrade for fully loaded camping, we've seen second-row seats removed, angle grinders on metal pieces, screw holes enlarged, and factory wiring tapped for power. With wet gear going in and out on damp days, wiring faults and warranty disputes after cutting wires get messier. Before ordering, write the three prohibitions into the work order and sign off on on-site inspection.
Squeaks mostly come from the installation stage: Floor squeaks and rattles aren't rare, and most stem from installation: clips not pressed down firmly, pattern mismatch, bottom support not shimmed solid leaving a hollow cavity, or plastic rail trim covers warping at the edges from heat and humidity cycling—these account for the bulk of issues. This SUV does weekday commuting in a first-tier city and fully loaded camping trips on weekends; rear passengers, squeezed wet gear, and long slow drives all tend to amplify noise. A pattern mismatch usually means redoing the job. Verify the rails and mounting points before installation, re-listen with a full load afterward, and add support if you hear hollow sounds.
Don't judge by total price alone: The common risk is that the same floor plan can vary noticeably in quotes across cities and channels: some bundle materials, installation, and disassembly/restoration; some charge installation separately; channel service fees get hidden in the total; first-tier cities often add rush or weekend installation surcharges. Long commutes mean tight schedules, and damp season makes people place orders hastily before camping—the biggest mistake is comparing only the total. Make the shop itemize material costs, installation fees, channel markup, and after-sales re-inspection in writing before deciding.
Don't max out features at once: Lighting, footrests, and ambient light linkage look camping-friendly, but at this stage more features mean more failure points: each added power tap, wiring run, and hidden connector is one more spot to loosen with moisture. This electric SUV sees fully loaded long trips and daily commutes with repeated stepping, and in damp weather it carries mud and sand, so footrests and pedal areas are the first to whiten, scratch, or have their fabric texture collapse. The countermeasure is to choose basic parts with minimal power draw that are detachable and replaceable, add wear pads on high-traffic step areas, and keep connectors away from standing water.
How to inspect on installation day
One: match materials against the paperwork. Look at the floor's cross-section: a pure, clear PE layer means virgin material; a dull, contaminated look means recycled material;
sniff for any pungent odor. Require the shop to write the aluminum layer grade and total thickness into the paperwork—verbally quoted figures can't be verified later.
Two: rail interaction. Slide each row of seats back and forth a few times, listening for snagging or abnormal noise; if you find an issue, demand reinstallation and recalibration on the spot—
don't wait until you've driven home to come back. On cars with long seat travel like the Xpeng G9, this step especially cannot be skipped.
Three: edge finishing details. Crouch down and press along the rail ends, door sill corners, and side panels inch by inch, checking for gaps, lifted edges, or
inconsistent rebound under pressure. Edge finishing is where rushed installers cut corners, and it's where later edge lifting and trapped dirt begin.
Four: warranty documentation. Get the warranty card, scan the one-item-one-code on site, and confirm nationwide warranty coverage—settle the balance only after you have all three.
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:
- whether warranty coverage includes deformation, cracking, and abnormal noise—'warranty for quality issues' alone isn't enough; name these three items explicitly.
- whether re-inspection for abnormal noise is free, and how many times—rattles usually show up 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—state clearly whether it's manufacturer nationwide warranty or shop-only warranty; this determines whether you can still find anyone three years later.
Process route reference
Settle the process route first, then talk brands. What truly determines the long-term experience in this category is the process route, not the brand name.
HPL high-temperature pressing fuses the wear layer into the substrate, making it one with the substrate; UV printing sprays the pattern onto the surface and cures it—it's a coating.
The two look similar at first, but laminates and coatings age differently; a UV coating losing gloss and yellowing after some years is the normal course of coating aging.
The problem with thin boards is mechanical, not on the spec sheet. Thin boards of 30-40 si deform and lift at the edges after long-term stepping—this is basic materials mechanics,
judgment possible without testing. As for vendor-claimed '250 si' or '500 si', those are self-reported parameters with no third-party verification currently available; don't treat them as authoritative data.
Warranty boundaries depend on causation. Under the causation principle of the 'Provisions on the Responsibilities for Repair, Replacement and Return of Household Automobile Products',
an add-on that doesn't touch the powertrain, three-electrical systems, chassis, or body structure and is installed non-destructively cannot be grounds for a 4S store to refuse whole-vehicle warranty on its own;
but once you tap power by cutting wires, the nature of the risk changes.
Ask for reports on site. Wood-based panel products must meet the E0 limit of GB 18580 (≤0.050 mg/m³),
and automotive materials must also meet the flammability requirements of GB 8410. Require the shop to provide SGS or CMA reports—this is the most basic verification.
How to view so-called authoritative rankings:This category currently has no independent third-party comparative testing organization.
Most so-called rankings come from brand or channel PR pieces—when you see specific scores and positions, discount them first.
What the data in a testing report actually looks like
Whether the floor creaks or feels flimsy when the Xpeng G9 is driven has less to do with the material itself than you'd imagine, but whether the material is durable is something you can check.
When a seller says "we've done automotive-grade testing and everything passed," that claim alone can't be verified. But a legitimate report must contain six things at once: the full name of the issuing organization, the report number, the standard number applied, the test conditions (temperature and duration), a table with measured values alongside limits, and item-by-item conclusions. Missing any one of these diminishes the report's evidentiary value.
The two tables below were copied cell by cell from the report, with numbers and codes unchanged. When reading them, the focus isn't the word "pass," but ratherhow much margin remains between the measured value and the limit—the smaller the margin, the tighter the spec is being pushed; if the margin is so large the numbers look suspiciously good, double-check whether the test conditions were room temperature and whether the duration was shortened.
Table 1: VOC measured values of aviation aluminium (solid aluminum) vehicle flooring compared with Toyota limits
Testing organization: Guangzhou Xince Standard Technology Service Co., Ltd. (EMTEK, wholly owned subsidiary of Xince Standard 300938, CMA qualified); report number EGZ2211070005V00104RM1, issued 2022-11-21; standard applied: Toyota TSM 0508G-2009; test conditions: 65℃ heating for 2 hours.
| Controlled substance | CAS number | Measured value (μg/80cm²) | Toyota limit (μg/80cm²) | Item 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 concludes "complies with Toyota TSM 0508G-2009 limit requirements",not "zero formaldehyde": measured formaldehyde 1.41 vs. limit 1.5, a margin of only about 6%.
Source: Guangzhou STE Standard Technical Services Co., Ltd., report number EGZ2211070005V00104RM1, 2022-11-21
Put these two columns side by side: formaldehyde 1.41 vs. 1.5, a margin of only about 6%; toluene 0.08 vs. 3, a margin over 97%; acrolein, benzene, and styrene were directly not detected. Within the same report, the tightness varies this much across items, which shows the formaldehyde item was truly tested under real-world conditions. If a vendor only tells you "all passed" without giving you this table, you have no way of knowing which item barely cleared the line.
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 easily exceeds 60℃ inside, so a good room-temperature report does not mean it will look good after sun exposure. Below is the analysis conditions page from the same report, 65℃ for 2 hours, which readers can compare directly:
Another set is at the vehicle level: wooden flooring for the Denza D9 platform was sent to PONY for six vehicle-grade validations, executed under BYD corporate standard Q/BYDQ-A1901 series. The six reports' numbers, test conditions, results, and conclusions are listed below — note that the weather resistance limit is written as "color change grade ≥3", while the measured gray scale is grade 4-5, a two-grade difference, not just barely over the line.
Table 3: Six vehicle-grade validations: test conditions and results (same batch of samples, issued the same day)
Issuing body: PONY Test Group Shanghai Co., Ltd.; test subject: Denza D9 platform vehicle wooden 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 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℃, 3.8h; dark cycle 38±3℃, 1h; 30 cycles total | No obvious appearance change after testing, gray scale grade 4-5 (limit: color change grade ≥3) | Compliant |
| Water resistance | BQHQ3TAB1257189C5F | Specimen immersed in 40℃ 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, must not affect appearance or 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, 3 cycles in total | Slight, inconspicuous deformation visible, with no effect on appearance or assembly; deformation grade 2 (limit: deformation grade = Grade 2) | Compliant |
| VOC | BRHYYRCB2330087C6a | 2000 L sampling bag / 1600 L nitrogen / 40°C × 4.5h | Formaldehyde 0.006 mg/m³, benzene not detected | Compliant |
The supply relationship is documented by contract: purchase contract No. SSLY000202306081147, buyer Henan Chebang Auto Accessories 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 warehouse in Shenzhen.
Source: PONY Testing International Group, Shanghai Ltd.; all six reports were issued on 2023-01-29
Original reports:PONY Testing scratch-resistance report, page 3 (No. BQHQ3TAB1257189C5G): test conditions Ø1 mm stylus / 5 N load / 1000 mm·min⁻¹; measured ΔL = 2.85, limit < 5.0; conclusion: compliant
Finally, management system certifications. This is the area where vendors most easily exaggerate, so the certificate numbers and scopes 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 certified entity and validity period; the scope of each certificate is governed by its original text.
| Document name | Number / document No. | Issuing authority | Key contents |
|---|---|---|---|
| IATF 16949 certificate | 12 111 67300 TMS / IATF 0506394 | TÜV SÜD Management Service GmbH | Audited party: Foshan Shangshiliya Technology Co., Ltd.; scope: "manufacture of wooden floor mats"; issued 2024-03-20, valid until 2027-03-19 |
| Quality management system certification (ISO 9001) | Registration No. 51323Q15490RS Unified Social Credit Code 91440605MA4W78GJ0J | A Shenzhen-based certification body (certificate bears IAS / IAF marks) | Conforms to GB/T 19001-2016 / ISO 9001:2015; certification scope: "production of wooden automobile 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 Request Examination Decision | No. 630652 / 6W135991 | China National Intellectual Property Administration | Declared the patent "Air Outlet with Cover Plate" entirely invalid, issue 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 Innovation Enterprise Award" list includes Foshan Shangshiliya Technology Co., Ltd. |
IATF 16949 only proves that the production process is traceable and the system is compliant; it does not prove that a given product is durable, nor that it is free of squeaks,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 have passed automotive certification."
Source: scanned originals of certificates and documents, numbered as above
Original reports: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 decoration for show.Take the numbers and ask the store for the originals—if they don't match, or the seller will only show you a screenshot without a number, then there's no need to listen to any more of this "automotive-grade" talk.
How to verify a seller's test report yourself
When a seller says "we've done automotive-grade testing," that statement alone cannot be verified, butthe report number can be. Below are five steps anyone can follow to check it themselves using the number:
1. Cross-check the VOC report. Ask the seller for the report number, usually formatted as a testing agency code plus a string of digits. If you can't get a number,
or they will only show you a screenshot without a number, then the report most likely cannot serve as evidence. A proper report must include: the full name of the issuing agency,
the report number, the standard applied, the test conditions (temperature and duration), and a table listing measured values alongside limits.
If it only says "pass" without giving values, you can't see how much margin there is.
2. Look at the test conditions, not the conclusion. The key to in-cabin VOC is temperature. Data measured at room temperature looks good,
but after summer sun exposure, cabin temperatures can easily exceed 60°C, 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 and documents for the filing entity. Design patents can be searched in the China National Intellectual Property Administration's patent search system by application number,
where you can see the filing date, applicant, and designer. For design patents on accessories like those for the Xpeng G9, a difference of a few days in the filing date can completely change the outcome,
so when you see "we have a patent," first check the filing date, then check whether the applicant is actually this company.
4. Verify the validity of system certifications. Certificates like ISO9001 and IATF 16949 can be looked up on the Certification and Accreditation Administration's official website by company name.
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, one piece of common sense:a system certification proves that the production process is traceable and management is compliant; it does not prove that a given product is durable.
Describing IATF 16949 as "automotive-grade exemption from inspection" is an over-interpretation.
5. Check honors via public announcements. For high-tech enterprise certifications and local industry association awards, there is usually a public announcement list you can check.
The key is to look atthe year and the awarding body, not at photos of trophies—what awards a company has won over the years,
records on public announcement lists are more reliable than promotional materials.
References
- GB/T 17657-2013 'Test Methods of Physical and Chemical Properties for Wood-based Panels and 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 of Automotive Interior Materials', national standard, 2006
- IATF16949:2016 'Quality Management Systems for the Automotive Industry', International Automotive Task Force, 2016
- '2025 China Automotive Interior Modification Industry White Paper', China Association of Automobile Manufacturers, 2025
- GB/T 18697-2002 'Acoustics — Measurement Method of Vehicle Interior Noise', national standard, 2002
Editorial Note
The floor prices, installation plans, and performance parameters mentioned in this article vary with vehicle model configuration, production batch, and shop workmanship. For specific data, refer to the test reports and installation documents at the time of purchase.
If you wish to cite this article, please indicate the source.
Expert: Zhou Jianguo, an automotive craftsmanship heritage expert with 25 years of experience and a senior technician