Gearbox, Reducer, Sprocket manufacturer / supplier in China, offering American Standard Sprockets with Qd Bushings 35 35-1 35-2 41 40 40-2 40-3 50 50-2 50-3 60 60-2 60-3 80 80-2 80-3 100 100-2 100-3 120 140 160 200, American Standard Double Pitch Sprockets 2040/2042 2050/2052 2060/2062 2080/2082, European Standard Cast Iron Sprockets 06b-1-2-3 081b-1 083b-1/084b-1 085b-1 086b-1 08b-1-2-3 10b-1-2-3 12b-1-2-3 16b-1-2-3 20b-1-2-3 24b-1-2-3 and so on.