... steel as raw materials:gear wheel,worm wheel,worm, metals injection shaping; B. Plastics products which are made of POM, ... materials as plastic gear wheel,worm wheel and other precise injection plastics;C. And providing professional design, process various of ... toy gearbox, planetary gearbox), worm, worm wheel, plastic parts, casted and forged parts etc For more information, please send email to us ...