... . 2.fast delivery and good service. 3.specifications are welcomed Spur Gear First, export machinery and fittings, annual output 2 million ... metallurgical machinery and fittings, annual output 10 million RMB.Third, Spur Gear Module 0.5-16,Outer Diameter is 20-1250mm ... international traveling merchants to inquire, guide, cooperate, and develop together! spur gear