Konwin was established in 2003 to provide heating solutions to homes across the world. Located in Ningbo, China, Konwin consists of 3 manufacturing divisions: DESA, ECOTRONIC, and TRUSTTECH; and a designated design division: Spark Design.

Konwin is the second largest electric heater manufacturer in China and the largest manufacturer of infrared cabinet style heaters. Konwin manufactures millions of electric fans, heaters, and stoves each year. Its 3 manufacturing divisions employ over 1,900 associates. Spark Design generates hundreds of new product designs each year to meet the ever changing needs of their consumers.