Ningbo Maosheng Pneumatic Machine CO.,LTD is Iocated at the downtown of Hongtang JiangBei District of NingBO city,which on the coast of the East ... sq.m.Its products include bronze sintered filter elements,pneumatic components,one-way throttle valve,exhaust muffling throttle valve, ... scale factories in our country and 80%users adopt the pneumatic components fittings of our company. We offer our clients ...