... . all the chain parts with heat-treatment and surface treatment. super quality roller chain Verified Information This information is Verified by ... series and B series): 2,500,000 M/Year Motorcycle Chains:5,000,000 M/Year Short Pitch Precision Roller Chains (A ... and B series): 1,888,811.61 M Motorcycle Chains:3,010,788.92 M Export Market Distribution: Market Revenue(Previous Year ...