1. specialling in spur gear producing 2, material : brass , stainless steel POM 3, OEM and small quality accepted 4, ... non-standard Material: Carbon steel, stainless steel, plastic, POM, aluminium alloy, bronze, brass. Surface treatment: Carburizing, ... engine lathe, milling machine, drilling machine, hobbing machine, grinder, gear shaper, testing center. Competitive price & prime quality & best ...