We are professional air disc brake caliper manufacturer  for truck bus and trailer. We produce complete brake caliper ranges over 15 years. We are supplier for OE and trailer  axle manufacturers. We have casting,forging,heat treatment,CNC machining,Auto assemble&test, all of the core parts are produced by ourselves. Welcome to join us and cooperate with us. email:market@brakesystem.cn www.brakesystem.com