Qi Di Song

Kelin Environmental Protection Equipment, Inc. engages in the design, fabrication, sale, and services of environmental equipment. It offers dust-collecting products such as hot flue gas bag, reserve air bag, unit, electric and cyclone filters, reserve air bag filter serials, electrical control, filter's fittings, and dust-conveying devices. It also provides flue gas treatment system and material recirculation in various industries such as metallurgy, building material, machinery, casting, light industry, chemical industry, grain processing, utility boiler and waste incineration. The company was founded in December 28, 2007 and is headquartered in Chongqing, China.

Jiangsu Kelin Group Co. Ltd. is a Chinese company that manufactures vacuum cleaners. The company is based in Suzhou, China.

Part of Wuxi Tianheng Trade Co. Ltd., Suzhou Kelin Environment Technology Eng Co. Ltd. engages in technology engineering services. The company is based in Suzhou, China. Suzhou Kelin Environment Technology Eng Co. was acquired by Wuxi Tianheng Trade Co. Ltd. from Kelin Environmental Protection Equipment, Inc. on June 17, 2015 for $6.09 million. Qi Di Song has been the CEO of the Chinese company since 2002.