... leakage, environment friendly 2, high quality and low price hot water circulation pump a) specification:ModelMaterialsSpeedCurrent (A)Voltage (V)Power ... suburb,house,to match with industrial equipment,to supply water in cycle for cooling air-condition,boiler and solar ... ,3Ccertification(china compulsory certification),ISO 9001 & 2000 Quality,Management System Certification ,The ISO14001 environmental ...