Shanghai Yuehan Machinery Co., ltd is a professional production company of pneumatic diaphragm pump, electric diaphragm pump, series of electric reciprocating pump, is a professional pump production enterprise. The main products including: QBK pneumatic diaphragm pump, QBY3 pneumatic diaphragm pump,QBY3 electric diaphragm pump, WBWBR electric reciprocating pumps, which are favored by customers at home and abroad. These products have the competitive price with high quality.