... and stainless steel as raw materials which are as following:gear wheel,worm wheel,worm, metals injection shaping; B. Plastics products ... ,nylon,determine as raw materials.The products concerning as plastic gear wheel,worm wheel and other precise injection plastics;C. And ... minitype gear.For more information, pls email to us or call us( TEl: 86-0755-88841859, Fax: 86-0755-25500780) Planetary gear motor ...