... bicycle chain/bike chain /rollar chain colored bike chains, titanium bike chain, plastic bike chain, Industrial Chain, conveyor roller chain, double pitch conveyor roller chain, transmission chain, driving chain, motorcycle chain ... chain technic is as bellow1)shot peening2)bluing3)phosphating4)nickel-plated5)zincing6)heat treatment7)greasing8)quenching9)tempering10)oiling, bicycle chain