1. produce precise worm, worm wheel, gear etc 2. high quality and good price 3. ... steel as raw materials which are as following:gear wheel,worm wheel,worm, metals injection shaping;B. Plastics products are made of ... as raw materials.The products concerning as plastic gear wheel,worm wheel and other precise injection plastics;C. And provide ... -5527202) if you are from America or Canada. precise worm