Zhengzhou Sinco Machine Co., Ltd. is an export-oriented enterprise constituted of the factories specializing in Plastics injection mould, Hardware, transmission Parts (such as Pulley, Taper Bush, Sprocket, Chain, Timing-belt pulley, Gear, Bearing, etc. ), Mining machine series and other machining parts according to client's requirement. Sinco Machine also has an Engineer team, which can act as your partners in quality and provide you quality control services.