Hefei Ning Tai Vacuum Equipment Co., Ltd is a vacuum company which is doing research and development, production and sales, all roll into one. We have rich experience in producing of welded bellows and the research of vacuum accessories. Also, our team facilitates our company as a research and development base of vacuum accessories with their excellent producing skill and technical service. Basing on ISO9001 international quality management system, we establish rigorous practical and proactive management logos, and guarantee to provide quality products and services. For years, we offer our clients specialty designs and programs, and supply precision products to meet the specific application requirements. The main products are as follows: welded bellows, bellows globe valve, vacuum valve, bellows, expansion joints, bellows heat exchanger， compensator, bellows mechanical seal, bellows sensors, bellows seals, pressure hoses, crystal growth furnace coupling, vacuum tube connectors and so on.