... .Standards:ISO/DIN/ANSI 2.Good quality and best delivery time 3.Made Style:Manufacture and OEM Roller Chain Main products as ... , 428, 428H, 520, 520H, 530, 530H, 05MA, 05MB, 05MC, 06MC 2. O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains ... . Nickel-plated chains: 25NP,35NP,41NP,40NP,50NP10. Coupling chainsThe Chain technic treatment is as below:1.Shot peening2.Bluing3.Phosphating4 ...