Hangzhou Bei Chuang Transmission technology Co., Ltd.,isspecializing in transmission roller chains, motorcycle chains, leaf chains,long pitch conveyor chains, special chains agricultural chain with more than 6years with an area of more than 50000sq.m. hiring over 300 staffs. For yourreference,I list the following our products range,also you can refer to ourcatalogue,if you need any of the roller c...