Automotive Exterior Side Mirror Assemblies and Components

The irregular, shaped housing and internal support base form the core protective structure of the vehicle's side vision system. The black high-gloss shell must closely conform to the body's waistline curvature, while the white component serves as the internal carrier, providing a stable mounting interface. A transparent lamp cover with an embedded light-guiding prism structure is integrated at the bottom to house LED turn signals. All components are assembled modularly using precision snap-fits and locating pins.

The core challenge in manufacturing these Class-A exterior parts lies in eliminating injection molding defects such as sink marks, weld lines, and flow marks, ensuring surface flatness and consistent gloss under lighting. The black high-gloss surface is highly sensitive to mold polishing precision and injection holding pressure parameters. Meanwhile, the assembly gap between the lens and housing must be controlled at the micron level to ensure waterproof sealing and suppress wind noise during driving. Our production facility is equipped with Haitian and LK injection molding machines and BYK colorimeters, allowing strict control over batch-to-batch color consistency (Delta E values) and dimensional tolerances for key mounting points.

Leveraging our closed-loop in-house capabilities for injection molding and painting, we offer one-stop delivery from raw material modification and precision molding to primer, basecoat, and clear coat application. The factory holds IATF 16949 certification and adheres to stringent automotive-grade aesthetic and functional acceptance standards. Buyers are requested to provide 3D CAD models or 2D drawings to evaluate parting line locations and gate schemes. Comprehensive quotations and lead time assessments will be provided based on annual demand volumes and surface finish requirements (e.g., metallic or pearlescent paints).