Hongsen Machinery covers a land area of 5000 square meters. There are over 300 staffs and workers including a specialty team of ten techicians. Hongsen Machinery has a close cooperation with the processors and experts in zhejiang university. Shanghai jiao tong university and tianjin university and several senior engineers of leading domestic OEMs are invited as the consultants of the company. A number of technical talents are trained in production,development and quality control and grow up in the company. At present,Hongsen Machinery is capable to manufacture multiple categories of refrigeration and A/C accessory parts such as solenoid valve series, ball valve series, sight glass series, expansion valve series and shut off valve series. Hongsen Machinery becomes one company intergrating R&D, production,and marketing into one.