Precision Surface Finishing Services
Finish Starts with the Mold
In injection molding, the surface quality of the final part is a direct reflection of the mold’s surface. Unlike vendors who outsource post-processing, JUCHENG controls the finish at the tool level.
Leveraging our 25+ in-house 5-axis CNC machines and expert hand-polishing team, we achieve the most rigorous texture and clarity standards. Whether you require a high-gloss mirror polish injection molding finish or a specific VDI 3400 texture, our in-house control ensures 100% consistency.
Our Comprehensive Finishing Portfolio
SPI Polishing
Standardized grades from A-1 (High Gloss) to C-3 (Matte). Essential for optical clear molding and premium aesthetic housings.
Painting & Coating
Professional medical grade plastic painting and soft-touch coatings for enhanced ergonomics and custom brand colors (Pantone/RAL).
Plating & Metallization
Vacuum metallization and electroplating (Chrome, Nickel) to give plastic parts a premium metallic look and increased surface hardness.
Texture & EDM Finish
Achieving precise VDI 3400 texture and Mold-Tech patterns for non-slip surfaces, scratch resistance, and industrial aesthetics.
Pad & Silk Printing
High-durability graphics, instructional icons, and branding. We utilize precision pad printing for complex curved surfaces.
EMI/RFI Shielding
Conductive coatings applied to the interior of housings to prevent electromagnetic interference in sensitive AI & Robotics hardware.
Surface Finish Standards Comparison
| Standard | Grade / Type | Surface Appearance | Common Application |
|---|---|---|---|
| SPI (US) | A-1 to A-3 | High Gloss / Mirror Finish | Lenses, Clear Parts, Luxury Housings |
| B-1 to B-3 | Semi-Gloss / Paper Polish | Industrial Parts, Standard Enclosures | |
| VDI 3400 (EU) | VDI 12 - 24 | Fine to Medium Texture | Automotive Interiors, Soft-touch Grips |
| VDI 27 - 45 | Rough / Spark Texture | Heavy-duty Hardware, Structural Parts | |
| Functional | EMI Coating | Conductive / Matte Gray | Electronic Medical & AI Devices |