We produce precision die-cast metal components for car sunroof and panoramic roof modules, not glass assemblies. As an OEM/ODM partner, we support you from DFM and mold flow analysis through tooling, rapid samples, series production, and finishing. Our focus on zinc and aluminum alloys delivers durability, dimensional stability, and premium surfaces with reliable global supply.
Since 2006, Kunshan Diamond Precision Mold Co., Ltd. has delivered zinc and aluminum die casting for automotive programs worldwide. Annual capacity is about 300 mold sets and 60 million die-cast parts, supported by 350–500 ton machines and rigorous metrology. We offer chrome, satin chrome, PVD, galvanizing, and nickel/chromate finishes and have program experience with major OEM platforms, including Volkswagen and brands such as BYD, Huawei, and Ford.
Our engineering optimizes wall thickness, gating, and ribbing for strength-to-weight, sealing accuracy, and NVH performance across sunroof architectures.
Frames and perimeter reinforcements
Guide rails, carriers, and sliding housings
Hinge brackets, tilt arms, and lock housings
Motor and actuator housings, gearbox covers
Sunshade track details and interior bezels
Water gutter channels, drain interfaces, sealing bosses
See related expertise in automotive zinc alloy products.
We cast frame sections, corners, and rail features with controlled flatness for glass and seal interfaces. Integrated fastening and drainage details reduce secondary operations and improve module assembly.
Compact housings and brackets are engineered for cycle life, impact resistance, and corrosion protection. Tight tolerances maintain alignment, smooth motion, and low NVH in tilt-and-slide and pop-up systems.
Zinc alloys excel at thin walls, intricate details, and damping. Aluminum alloys provide stiffness and strength-to-weight for structural elements.
| Alloy | Best For | Typical Components |
|---|---|---|
| Zinc | High detail, thin walls, cosmetic features | Hinges, locks, bezels, carriers |
| Aluminum | Stiffness, strength-to-weight, thermal performance | Frames, rails, actuator housings |
Surface options include chrome, satin chrome, PVD, galvanizing, and nickel/chromate to balance appearance, wear, and corrosion resistance.
We start with DFM and mold flow to predict fill, venting, and distortion before cutting steel. In-house tooling and calibrated metrology secure repeatable sealing interfaces, rail geometry, and gear centers. Explore our mold design and die casting capabilities.
3D CAD (STEP/IGES) and 2D drawings with GD&T
Alloy and finish targets, corrosion test requirements
Annual volumes, SOP/EOP timeline, ramp plan
CTQs: sealing surfaces, rail geometry, flatness, gear centers
Sample quantity, inspection reports, packaging needs
Send your CAD and specifications for a fast, accurate quotation. As an OEM/ODM manufacturer of Automotive Skylight components, dmmold supports rapid sampling and mass production with competitive offshore pricing and dependable export logistics. Contact us to schedule an engineering review and accelerate your next sunroof or panoramic roof module.
