1.strict QC system 2. CNC machining 3.fine grain grey iron (GG20, GG25), C45 steel, aluminum ... Power Transmission, which has its own three factories, one foundry and 5 sales companies, is specialized in all sorts of power ... locking assemblies, couplings, torque limiters, sprockets, gears, timing pulleys, hubs and some non-standard parts. We are the largest manufacturer of ...