At Dongguan Shengpeng Precision Technology Co., Ltd., surface treatment is the transformative final step that unlocks the full potential of CNC-machined components. Integrated seamlessly with our machining processes, our advanced finishing technologies ensure parts meet stringent requirements for durability, functionality, and aesthetics across medical, automotive, and industrial sectors

--- Core Surface Treatment Capabilities   Our facility in Dongguan, China, combines CNC machining centers with specialized post-processing equipment to deliver:   1. Anodizing     - Purpose: Enhances corrosion/wear resistance on aluminum parts while enabling color customization[[1]()].     - Applications: Aerospace enclosures, electronic housings.   2. Electroplating     - Purpose: Applies zinc/nickel coatings for sacrificial corrosion protection[[1]()].     - Applications: Automotive fasteners, marine hardware.   3. Precision Polishing     - Purpose: Achieves optical-grade mirror finishes (Ra ≤0.1μm)[[1]()].     - Applications: Medical instrument handles, luxury consumer goods.   4. Passivation     - Purpose: Removes free iron from stainless steel to maximize corrosion resistance[[1]()].     - Applications: Surgical tools, food processing equipment.   --- Integrated Manufacturing Advantage   ✅ Single-Source Efficiency   Combine CNC turning, milling, and 5-axis machining with surface treatments under one roof, eliminating supply chain risks[[1]()].   ✅ Quality Synergy   CMM (Coordinate Measuring Machine) verifies dimensional stability before/after finishing[[1]()].   ✅ Material Expertise   Compatible with critical materials:   - Aluminum Alloys (Anodizing)   - Stainless Steel 304/316 (Passivation)   - Medical-Grade Plastics (Polishing)   --- Industry-Specific Performance Enhancements   | Industry       | Challenge                  | Our Solution                     |   |--------------------|--------------------------------|--------------------------------------|   | Medical Devices| Biocompatibility & Sterility   | Passivation + Medical-grade Anodizing|   | Automotive     | 500+ hr Salt Spray Resistance  | Zinc-Nickel Electroplating           |   | Consumer Electronics| EMI Shielding + Aesthetics | Conductive Coatings + Brushed Polish |   --- Technical Validation & Compliance   - Equipment: Dedicated plating tanks, automated polishing lines, Class 1000 cleanrooms[[1]()].   - Quality Systems: ISO-certified processes with ASTM B117 salt spray testing.   - Traceability: Full documentation for regulated industries.   --- Case Study: Ventilator Valve Component   > *Initial State*: CNC-machined 316L stainless steel with microbial adhesion risk.   > *Our Process*: Passivation → Micro-arc oxidation → Sterile packaging.   > *Result*: 32% higher yield rate with ISO 13485 compliance[[1]()].   --- Unlock Your Component’s Potential   Submit part drawings for a free Surface Treatment Selection Guide and DFM analysis within 24 hours.