Zhejiang longtengtongyan co., Ltd include with 877 workers and 217 officers and technicians owns 12 assembling & packing lines, 30 hot die casting machines for zinc, aluminium, brass and bronze, 60 forging machines from 40 tons to 500 tons and 500 computerized machining equipment. our output reaches USD 1.2 billion per year. Our leading products are balancing valve, relief valve, electromagnetic valve, bronze fire protection valve, bronze plumbing & heating valve, flange ball valve, gate valve, stop valve, boiler valve and so ***** The electromagnetic valve, boiler valve & balancing valve have been titled as Zhejiang hi-tech project, and balancing valve & its system has been listed in the national project of green energy and the national program of 863. We have been dedicating in researching and developing for all kinds of resource-saving, environment-protecting, intellective new type material, in order to protect rare water resource and human healthy. Meanwhile, we have invested a lot in studying for Pneumatic Actuator & Electric Actuator. Nowadays we have obtained about 1000 patents and gotten ISO9001, UPC, ACS, CSA, DVGW, UL, CE, FM, WRAS, WATERMARK certificates. With our continual innovation, Zhejiang longtengtongyan co., Ltd.has been steady supplying line for IBP, ITT, Leroymerlin, B&Q King Bull and Zhongcai Group. Zhejiang Word has customized the most advanced valve auto-producing line in mainland from Italy, and then our output will reach and then our output will reach USD 10 billion.