Zhejiang Hongsen Machinery Co., Ltd was founded in 1992,which devotes itself in the R&D and manufactor of various valves in refrigeration and air conditioning system. in the past 10years,Hongsen Machinery staffs persistentlly adhere to open up,keep forging ahead and never rest with their achivvements.they insist on new and high-tech as the guidance in the development and pursue the sustainable development road with productivity and quality efficiency.