... ,injection molding. 1. our factory can make high quality plastic screw as per customer's drawing or ... 3*3*3mm) -to-medium size and high-precision plastic part and plastic injection mould for electronic products, ... high-quality alloy steel with heat treatment,wear resistance,corrosion resistance, S136, SKD61,H13,SKD11.Advanced equipments:precision grinder,milling machine,driller,wire cutting machine ...