... parts for optical plastic parts 2.10 years of experience 3.Timely delivery. 4.Customerized. Plastic parts, injection plastic parts ... bending, welding, plating, powder coating, assembling, 5. )machine: CNC lathes, machining centers, pressing machines, drilling machines, ... grinding mechines, injection moulding machine, ect. 6. )surface treatment: Powder coated, zinc ...