A Shanghai factory built around fitment
We make aftermarket lighting and interior upgrades that install like original parts — and we support the businesses that sell and fit them.
From one product line to a complete upgrade catalog
Auto Accessory Factory is the export brand of Shanghai Mars Industrial Co., Ltd. We started with LED headlight assemblies for popular European and Japanese platforms, and grew with our customers into tail lights, carbon racing seats, seat upgrade kits, seat covers and custom steering wheels.
Today we supply distributors, tuning workshops, van converters and private-label brands in more than sixty countries. What they value most is not a long product list, but parts that fit the first time, arrive undamaged and are backed by a team that answers quickly.
Our work is organised around three questions we ask for every order: does it fit this exact vehicle and market, will it survive shipping and daily use, and can the installer finish the job without surprises?
Key facts
- Company
- Auto Accessory Factory (operated by Shanghai Mars Industrial Co., Ltd.)
- Location
- Shanghai, China
- Business type
- Manufacturer & exporter, OEM / ODM
- Product lines
- Headlights, Tail Lights, Racing Seats, Seat Upgrades, Seat Covers, Steering Wheels, Interior
- Catalog
- 224 SKUs for 19 vehicle makes
- MOQ
- From 1 set
- Warranty
- 12 months on manufacturing defects
- Shipping
- Express, air and sea · EXW, FOB, CIF, DDP
- Languages
- English, Chinese
- Contact
- [email protected] · +86 176 2154 1688
What happens under our roof
Lighting assembly
ESD-safe assembly of LED modules, projectors, light guides and drivers into complete headlight and tail light units.
Optics & electrical QC
Beam cut-off inspection, burn-in testing and CANbus compatibility checks for each platform.
Trim workshop
Leather, Nappa and suede trimming, diamond quilting and embroidery for seats and steering wheels.
Carbon finishing
Dry, forged and gloss carbon finishing for seat shells, steering wheels and interior parts.
Private label
Neutral or branded cartons, manuals, barcodes and inserts prepared at the factory.
Export logistics
Foam-moulded packing, consolidation and shipping by express, air or sea.
New platforms start at the CAD screen
Our engineers turn your target vehicles into fitment-checked designs — from light-guide signatures and DRL animations to seat foam profiles and steering-wheel grips.
- 3D scanning and CAD of OEM mounting points
- Prototype housings and samples for approval
- Custom DRL animation and lens tint development
- Private-label packaging and manual design
Burn-in before it ships
Lighting assemblies run on aging racks before packing, so early LED or driver failures are caught in Shanghai — not in your customer’s garage.
- Continuous burn-in of DRL, low/high beam and indicators
- Connector and CANbus compatibility checks
- Beam cut-off inspection on an aiming wall
- Seal, vent and fogging checks
Interiors trimmed by hand
Seats, covers and steering wheels are made to each buyer’s configuration: material, colour, stitching, embroidery and centre marks.
- Colour swatches and sample approval before production
- Photo approval of finished seats and wheels
- Airbag-safe seam construction on seat covers
Built to arrive in one piece
Lenses scratch and mounting tabs crack — so every lamp is packed in custom foam, double-wall cartons and palletised for freight.
- Courier, air and sea options with consolidation
- Barcodes and labels applied at the factory
- Pre-shipment photos for every order
About working with us
Are you a factory or a trading company?
Auto Accessory Factory is the export brand of Shanghai Mars Industrial Co., Ltd., a Shanghai manufacturer and exporter. We assemble, test and pack lighting and interior upgrades and work directly with overseas distributors, workshops and brands.
Can I visit or audit the factory?
Yes. Buyers are welcome to visit Shanghai by appointment, or we can arrange a live video tour of assembly, QC and packing.
Which markets do you ship to?
We ship worldwide, with regular customers in the Middle East, Europe, North America, Australia and Southeast Asia.