... 4.Application:transmission part and machinery 1. Business type: sprocket manufacturer& exporter2. Main market: Southeast Asia ... Oxide black, galvanization, nickelizing, chromeplating6. Model: type A, type B, and type C. Single, Double, Triple35B 10T~80T, 40B ... treatmentOxide black, galvanization, nickelizing, chromeplating, sandblasting Model Type A & Type B, Single, Double, Triple - 35B10-80,40B9 ...