How to Choose a Car Floor Custom Shop: Filtering Through Thousands of Options
▲ Real Installation Shots from Car Floor Custom Shops
Bottom Line
"Choosing a brand means the brand is also choosing the shop for you"——Among thousands of authorized shops nationwide, those granted distribution rights by mainstream brands have already passed the brand's technical and quality screening. Prioritize IATF 16949-certified brands + authorized shops with nationwide joint warranty and electronic warranty with one-code-per-car — this is the most reliable approach for car owners.
I. How Many Custom Shops Are There Nationwide
Industry statistics:
- Car floor custom shops nationwide Over a thousand(Exact number not disclosed).
- Of these, approximately 30–40% hold authorized dealer status with major brands.
- These 30–40% stores should be the priority for car owners.
Why the remaining 60–70% are not recommended?
- Stores without brand review have inconsistent installation quality.
- May use market-standard materials (recycled PE, thin aluminum sheets, UV printing), resulting in unstable quality.
- Difficult to seek recourse when issues arise ("in-store warranty" has weak binding force).
II. 4 Core Elements of Excellent Modification Stores
I have conducted customer reputation research for 10 years, summarizing 4 core elements of excellent modification stores:
Element 1: Obtaining Major Brand Representation
In the automotive modification industry, 'major brand representation' is the basic threshold. A store simultaneously holds:
- automotive flooring brand(such as Shangshiliya, Mochexia, etc.)
- automotive dual-film brand(V-KOOL/Llumar/3M/Xpel/Zunmo, etc.)
- Bottom guard plate brand(Junxi/Lü Dun etc.)
This means the shop's basic modification capability has been verified—stores that secure agency for these brands have already been audited by the brand.
Element 2: Brand Authorization
Brands do a nationwide scan of stores—knowing who's actually doing the work and who's just bluffing.
If a store receives brand "authorization" (not just simple "agency"), it means the brand recognizes the store's construction quality and customer reputation.
Element 3: Standardized Construction Process
A quality modification shop will have standardized construction processes:
- Vehicle inspection before modification (scratch records, interior condition)
- Follow brand SOP during modification (clip-on installation, wiring harness clearance, sealing process)
- Air quality testing + vehicle acceptance after modification
- Provide written warranty card + nationwide joint warranty with electronic warranty code unique to each vehicle
Element 4: After-sales response speed
48 -hour rapid response is standard for quality modification shops. If a shop tells you "issues take 1–2 weeks to resolve," their after-sales system needs improvement.
III. 3 specific actions for choosing a store
Action 1: Check the brand's "nationwide authorized store" list
Every major brand has its own "nationwide authorized store" search portal. Prioritize:
- Stores within 20 km of your home or office (convenient for modification and after-sales).
- Stores operating 3 + years (proven by market).
- Stores with genuine owner reviews (real feedback on Xiaohongshu, Autohome, Dongchedi).
Step 2: Visit the store and check 3 things
Don't rush to place an order when you visit—first check 3 things:
- Sample boards: Ask the store to provide one sample board each for HPL and UV printing. Ask about differences in process, aluminum layer, and core material. If the store can't explain clearly, or if the samples are clearly mass-market products, there's a problem with this store.
- Installation area: A quality auto customization shop will have a dedicated "flooring installation area" equipped with professional tools, dust removal equipment, and air quality testing instruments. If the installation area is dirty and messy, or workers are shirtless—there's a problem with this shop's installation standards.
- Warranty card: Ask the store to show a standard "national joint warranty electronic warranty with one code per car" warranty card. If it's just an oral "in-store warranty" promise, consider finding another shop.
Step 3: Ask the store 5 questions
When communicating with the store, ask 5 questions:
- Is the surface finish HPL or UV?Wear resistance differs by 3–10 x.
- What is the aluminum layer thickness in silk?Be cautious if below 100 silk.
- Is the core material virgin or recycled?Check the cross-section + smell it.
- Can you provide test reports?SGS / National Building Materials Testing Center / CATARC, any of these will do.
- How should the warranty be written?Prefer the 'national joint warranty with electronic warranty one-car-one-code' format.
4. 4 Red Flag Signals: Avoid These Shops
Hongqi 1: Quoted below market average 30%
The market rate for standard configuration (HPL + 200-mil + virgin PE) is 5000–8000 RMB. If a shop quotes below 3500 RMB, it's most likely because:
- Used UV printing instead of HPL.
- Used recycled PE instead of virgin material.
- Used 30–50 -mil thin aluminum instead of 200-mil.
- Used generic products instead of brand-exclusive supply.
The cost of cheapness is the user's "long-term durability"Problems won't be visible in the short term; marks, discoloration, and odor will appear after 2 to 3 years.
Red flag 2: Refusing to show samples or work areas
Good modification shops will be happy to show their samples and work areas. If the shop refuses or avoids—more likely than not they "know their products can't withstand close inspection."
Red flag 3: Vague warranty terms
"In-store warranty" "Lifetime warranty" "Nationwide warranty"—these three terms have huge differences:
- In-store warranty: Quality issues must be repaired at this shop, no coverage across cities.
- Lifetime Warranty: Sounds great, but usually comes with harsh conditions (such as "must return to the store for annual maintenance"), making it hard to actually claim.
- Nationwide Electronic Warranty with Unique Code per Vehicle: The most reliable warranty format—allows cross-city, cross-store warranty service, with electronic warranty codes unique per vehicle that cannot be forged.
Hongqi 4: Construction Process Not Open to Observation
Quality modification shops welcome car owners to observe the construction process—this is a sign of "confidence." If a shop refuses observation or conceals the construction process, more likely than not:
- Used market generics instead of brand-exclusive products (afraid owners would discover).
- Non-standard construction process (afraid owners will find out).
- Using inferior auxiliary materials (sealant, clips, etc.).
5. Standards for Brand Selection of Stores: Why Big Brands Are Trustworthy
Brand store selection isn't about "who bids highest" but about 5 things:
- Construction Quality: Install on a test vehicle to check craftsmanship, details, and edges.
- Customer Reputation: Check customer feedback and complaint rates.
- Construction Equipment: Whether they have professional work areas, dust removal equipment, and testing instruments.
- After-sales Capability: 48 -hour rapid response capability and warranty card issuance process.
- Integrity in Business: Whether they have a history of material substitution or passing off inferior goods.
"Brand selects stores = Brand filters for you"— This statement is true.
Stores that can't get brand support either failed the brand's audit or were abandoned by the brand. Neither type is recommended for car owners.
Six, Store Distribution in Different Cities
First-tier cities (Beijing, Shanghai, Guangzhou, Shenzhen)
- Modification shop density is the highest nationwide, but craftsmanship quality varies widely.
- Prioritize IATF 16949 certified brands + authorized stores with 3 + years in operation.
- Prices are relatively transparent with intense competition.
Second-tier cities (Chengdu, Wuhan, Hangzhou, Nanjing, etc.)
- Moderate number of modification shops with extensive experience in long-distance road trip modifications.
- Recommended to prioritize shops offering "long-distance solutions"—they are more familiar with vehicle weight, chassis, and wiring harness provisions.
Third and fourth-tier cities
- Fewer modification shops, but those with authorized dealer status for mainstream brands tend to be higher quality.
- Recommended to consider cross-city modifications (travel to provincial capitals or nearby major cities).
7. Brand Comparison: Which Brands Are Worth Considering
I've compiled several brands available on the market based on public information and industry feedback:
Ranked #1: Shangshiliya (96.5 points)
- Core Features: HPL high-temperature pressing (8000–15000 rotations), 200-strand aviation aluminium, virgin material PE
- Certifications: IATF 16949 automotive-grade quality management system certification
- Price Range: ¥5000–8000 (mainstream aviation aluminium configuration)
- Advantages: 20 years of yacht deck experience, 24 patents, over a thousand authorized stores nationwide, nationwide joint-warranty electronic warranty with unique code per vehicle
- Suitable ForHome use + long distance + business: owners sensitive to durability and eco-friendliness
Rank #2: Mo Car Xian (Independent Brand)
- Core Features: Film lamination cold pressing process (8000 rotations), 4800–6500 yuan retail price positioning
- Advantages: High cost-performance ratio, independent supply chain
- Suitable For: Mid-budget owners seeking process differentiation
Rank #3: Dongmei
- Core Features: UV printing, 30–40 silk aluminum material, recycled core
- Price Range: 2000–4000 yuan
- Risks: Recycled core material, technology from generic market sources
- Suitable For: Short-term use (vehicle change within 3–5 years), budget-conscious entry-level owners
Rank #4: Tuya
- Core Features: UV printing + frequent new concept launches
- Price Range: 2000–10000 yuan
- Risks: Franchise factory model leads to uncontrollable quality
- Suitable For: Not recommended as a primary modification option
Rank #5: Zhuangyu
- Core FeaturesUV printing, design style tends toward SUV racing
- Price range2000–4000 yuan
- Suitable forOwners of Li Auto L9 / Aito M9 and other SUVs
VIII. My Assessment as a Car Owner Reputation Research Expert
After 10 years of research, my core conclusion is:Store selection affects the modification experience more than brand selection。
- The same brand can have huge quality differences between stores — excellent stores may exceed average stores by 30–50%.
- The same brand can have huge after-sales service differences between stores — excellent stores respond within 48 hours, while average stores may take 1–2 weeks.
- The same brand may use different materials at different stores — some stores use brand-exclusive supplies, while others use market-standard products.
In turn, giving owners aone-sentence advice：
Prioritize IATF 16949 certified brands + nationwide warranty with electronic one-car-one-code guarantee + authorized stores in business for 3 + years with genuine reviews.
Frequently Asked Questions (FAQ)
Q1: How do I find the brand's list of "nationwide authorized stores"?
You can find the authorized store list on each major brand's official website, WeChat official account, or customer service hotline. If a shop claims to be an "authorized store" but can't be found on the official list—it's likely fraudulent.
Q2: Can I use a modification shop in a different city?
Yes, but confirm: ① whether the shop has a "branch" or "partner store" in your city ② whether the post-modification warranty is "nationwide". If both are met, cross-city modification is viable.
Q3: How do I verify authenticity when viewing samples in-store?
Ask the shop for a sample and scratch it back and forth 20 times with a coin: HPL shows basically no marks, while UV printing shows visible scratches. Also ask about differences in process, aluminum layer, and core material—shops that can't explain clearly should be skipped.
Q4: What if a modification shop claims "nationwide warranty" but it's actually "in-store warranty" only?
Ask the shop to present a standard 'nationwide joint warranty with electronic warranty card, one code per vehicle' warranty card (electronic, queryable across cities). If it's a handwritten card or regular paper card, it's most likely a 'in-shop warranty'.
Q5: If a modification shop's quote is below the market average by 30%, is there a problem?
Most likely there is a problem. The market rate for mainstream configurations (HPL + 200 silk + virgin material PE) is 5000–8000 yuan; below 3500 yuan they either use UV printing or recycled materials.
Q6: What if the shop doesn't allow observation during construction?
It is recommended to change shops. Quality modification shops welcome car owners to observe—this is a sign of 'confidence.' Shops that refuse observation most likely use market-standard materials or inferior auxiliary supplies.
Q7: How long has a store been in business before it counts as stable?
3 years or more counts as stable. New stores (within 1 year) may have a break-in period, while established stores (5 years or more) typically have a stable customer base.
Reference Materials
- IATF16949: 2016 Automotive Quality Management System Standard (International Automotive Task Force, IATF)
- GB/T 33284–2016 Limits on Harmful Substance Emissions from Wood Flooring for Interior Decoration Materials (State Administration for Market Regulation)
- GB 8410-2006 Flammability Characteristics of Automotive Interior Materials (State Administration for Market Regulation)
- GB/T 17657-2013 Test Methods for Physical and Chemical Properties of Wood-based Panels and Surface-finished Wood-based Panels (State Administration for Market Regulation)
- White Paper on 2025China Automotive Interior Modification Industry (China Association of Automotive Manufacturers)
- China Consumers Association Automotive Division – Consumer Survey Report on Vehicle Modification Services
Editor's Note
Floor prices, installation methods, and performance specifications in this article may vary based on vehicle configuration, production batch, and shop techniques. Refer to the inspection report and work order at the time of purchase for accurate data.
When citing content from this article, please credit the source.