Ningbo Maosheng Pneumatic Machine CO.,LTD is Iocated at the downtown of Hongtang JiangBei District ... than 10,000 sq.m.Its products include bronze sintered filter elements,pneumatic components,one-way throttle valve,exhaust muffling ... muffler,sintered stainless steel silencer,sintered filter elements,plastic muffler,plastic porous filter,powder compacting press,copper base and ferrous oily bush ...