... requirement,can print your own logoMain products as the following: 1.Motorcycle Chains: 25H (04CH), 415, 415H, 420, 420H, 428, 428H ... : A0,A1,A3,A4,A5,A66. O-ring chains and xw-chains: 420,428,520,525,530,630 (Racing Chains)7 ... ,50NP10. Coupling chains The Chain technic treatment is as below:1.Shot peening2.Bluing3.Phosphating4.Nickel-plated5.Zincing6.Heat treatment7.Carburizing8 ...