Door Armrest Assembly

• Drivers and passengers rest an elbow on the Door Armrest Assembly for hours on every trip; sag and worn coating are the two complaints buyers hear back about.
• Sag usually traces back to weak filler density inside the shell; flaking topcoat traces back to poor primer adhesion on the plastic substrate.
• Both failure modes are addressed before the armrest leaves the line.

• The armrest skeleton is high-strength injection-molded plastic, then coated on the waterborne line.
• A dedicated primer line runs ahead of the color topcoat, bonding the film to the low-surface-energy plastic.
• Even after thousands of elbow presses and sleeve rubs, the film stays seated on the substrate.

• A paint-film thickness gauge and pencil hardness tester sample each batch for film build and scratch resistance.
• Thickness sits inside the agreed window: thin enough to feel soft, thick enough not to wear through.
• Painted arms go through the 100,000-class waterborne booth, which keeps dust out of the soft-touch film.

• 100% of assemblies are inspected against the customer sample before packing.
• IATF 16949 governs the line; third-party inspection accepted; 3-year warranty on build quality.
• EXW applies, with 30% deposit and balance settled before shipment; on arrival, broken parts are replaced free or credited at invoice value once after-sales reviews video or photos.

• Geely Lynk & Co 03, Great Wall B07 and Changan CS75 interior/exterior programs have used this armrest build.
• Hebei Xiujie Auto Parts Co., Ltd. is a Tier-1 supplier to Yutong Bus and ships door and seating trim to Yanfeng (Tianjin) Seating and Chengdu Aerospace Molding.

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