With the continuous development of domestic and iternationa, markets, in order to meet the needs of customers the company invested 50 milion yuan in the High tech industrial Park of linshi city, Changde City,Hunan Province in 2019, covering an area of more than 30 acres andexpanding the factory by about 20000 souare meters.lt established Hunan Rongxin Wind pipe Manufacturing Co, ltd. High molecular weight materials and polymer wind pipe production base. Daily production of various air ducts reaches 20000 meters, and all production equipment for polymer materials is gradually being improved. We have three registered trademarks and brands, namely "xinrong","0ingyigi", and "0ingyi"'All products have SGS testing and certification, and have passed IS09000 qualty system certification, We have been recognized as a nationalhigh-tech enterprise and have received strong support from the Polymer Materials Department of South china niversity of Technology in Guanazhou, Other related certificate inspection reports and product patents are currently being applied for.