1. Metal CNC Machining Service 2. Prototype Service 3. Metal CNC Products Established in 1984 by Hong Kong entrepreneur, PI is ... of Metal Stampin & Plastic Injection, Silicon Rubber 3. Prototype Service: CNC Machining, Laser & Line Cutting4. Metal Stamping5. Plastic Injection6. Surface Treatment: UV ... and ISO 14001 TUV, QC080000, CE, Rohs & Reach, UL, etc. CNC Machining & Prototype Service