Ningbo Maosheng Pneumatic Machine CO.,LTD is Iocated at the downtown of Hongtang JiangBei District of ... ,000 sq.m.Its products include bronze sintered filter elements,pneumatic components,one-way throttle valve,exhaust muffling throttle valve,muffler ... scale factories in our country and 80%users adopt the pneumatic components fittings of our company. We offer our clients our ...