... Manufacturer and OEM are both ok! ROLLER CHAIN MANUFACTURER 1.Chain material:40MN,A3,SS3042.Standard:ISO/DIN/ANSI3 ... following: 1.Transmission chain:A series,Bseries,Heavy duty series2.Conveyor chain:Double pitch chains,chain with attachments3.Motorcycle Chains: 25H (04CH), ... A5,A67. Leaf chains: LH series8. Nickel-plated chains: 25NP,35NP,41NP,40NP,50NP9. Coupling chains The Chain technic treatment is ...