Shaoxing Monstar Smooth Electro-Mechanical Co., Ltd. established in May, 2009 (whose predecessor was Shangyu Jianan Hardware Electro-Mechanical Co., Ltd. that founded in july,2004) is specialized in developing & manufacturing precision mechanical and electrical products, auto parts such as blowout-resistant tire valve(Chinese means 气门嘴) etc. Our company is located in Sha...