NTGD diaphragm valve is an ISO 9001 certified company located in NTGD industrial zone, Wenzhou city, China. It was established by a team of experienced engineer in 1999. Since then, NTGD dedicated to offer top quality diaphragm valve, including manual diaphragm valve, pneumatic diaphragm valve, lined diaphragm, sanitary diaphragm valve and so on.https://www.diaphragmvalve.net