永清集團始創于1998年，下轄永清環保股份有限公司、湖南永清水務有限公司、湖南永清機械制造有限公司、湖南永清環保研究院有限責任公司、湖南創御實業發展有限公司等多家子公司，從事土壤污染治理、大氣治理、污水處理、固體廢棄物處理、環保熱電、垃圾發電、環保設備制造，集技術研發、環保咨詢、設備制造、工程設計、工程總包、工程營運、投資等業務為一體，形成了完整的環保產業鏈。集團是湖南省(政府工作報告)點名支持做大做強的環保企業，旗下永清環保股份有限公司(300187.SZ)是國家發改委首批確定的國家節能服務公司之一、環保部第一批土壤重金屬修復技術重點推廣示范單位、全國第一家合同環境服務試點單位，也是湖南省環保行業唯一上市公司，2013年入選創業板指數股。
      
      　　Founded in 1998, Yonker Group has affiliated companies, such as Yonkers Environmental Protection Co., Ltd, Hunan Yonkers Water Co., Ltd, Hunan Yonkers Mechanical Manufacturing Co., Ltd, Hunan Yonkers Research Institute Co., Ltd, etc; it is dedicated in soil pollution treatment, air pollution control, wastewater treatment, solid waste disposal; dust extraction and afterheat power generation, synthesizing technology R&D, environmental consultation, equipment manufacturing, engineering design, engineering Project Contracting (EPC) and operation service to form an all-round chain of environmental protection industry. Yonker group is the one who is fully supported by Hunan provincial government to be larger and more competitive in environmental protection industry. Its subsidiary –Hunan Yonker Environment Protection Incorporated Company (300187.SZ), is one of the national energy-saving service companies firstly defined by NDRC, and the first trial company for contractual environmental service of our country, is the only listed company in environmental protection field in Hunan. And in 2013, it was selected as stock of Growth Enterprise Index.