Affiliated to China South Industries Group Corporation, Hunan TYEN Machinery Co., Ltd is one of the key high-tech enterprises supported by the National Torch Plan. TYEN develops, manufactures and sells products of the Chinese Famous brand "Jiang Yan", including diesel and petrol engine turbochargers, valves and cooling fans. Products are supplied to over 50 domestically well-known internal combustion engine enterprises like Yu Chai, Wei Chai, Xi Chai, Da Chai and Sinotruk. These engines are widespread applied to domains covering special equipment, aotumobile, shipping, engineering machinery, farm machinery, and power generation sets, etc.

Being the leader of the National Standards Working Group for Turbochargers, TYEN is playing a leading role in the industrial standard construction. The manufacturer is the only enterprise that has been entitled "National Enterprise Technology Certer", which consists of a post-doctoral research station, a turbocharger research department and a valve research department. TYEN has also successively been certified to the GB/TI9001, GJB9001A, and ISO/TS16949 Quality Management Systems, the GB/T28001 Occupational Health and Safety Management System, and the GB/T24001 Environmental Management System.

TYEN people are holding tightly the mission of "boosting the national power and enriching the future world". The manufacturer, in accordance with the enterprise spirits of integrity, cooperation, innovation and high-efficiency, and the marketing concepts of "demand grasping, market expanding, customer succeeding and opportunities gaining", is meeting the needs of customers with its excellent products and services.