... 4.DN3,4,6,10 Company profile:CHANGZHOU CHENGFENG FLOWMETER CO.,LTD was established in 1979,at the begining our company named ... /min5~45L/min120Details: Contact Details:Vicky LvSales ManagerChangzhou Chengfeng Flowmeter Co.,LtdNo.15,Tongjia Industrial Park,Changzhou,Jiangsu Prov.,ChinaTel:86 ...