Under the purpose of "good faith-oriented and customer the highest", Hongsen Machinery has passed CQC, CE product certification as Zhejiang Hongsen Machinery Co., Ltdll as ISO 9001 qualitysystem certification. Now it is applying for the UL and ISO 1400 certification further to provide additional safeguard and keep products with high quality.Hongsen Machinery always lays stress on the brand development and product quality. Hongsen Machinery invests more in the technical upgrading and introduces advanced technology. Now Hongsen Machinery products enjoy good quality as similar as international leading level and the products sell well both at home and abroad including some leading OEMs. Hongsen Machinery becomes one of the best manufactures and suppliers of refrigeration and A/C valves and accessory parts.