Sung-Bok Cheon

Hansung Co., Ltd is engaged in construction services. The company is based in Gyeonggi, South Korea.

Hansung PCC Co., Ltd. manufactures concrete pipes and other structural concrete products. The company was founded on April 1, 2009 and is headquartered in Seongnam-si, South Korea.

Yesco Environmental Solutions engages in the provision of engineering services to waste management equipment. It operates through the following businesses: Engineering, Operations, and Recycling. The company was founded in September 1997 and is headquartered in Cheorwon-gun, South Korea.

Yesco Co., Ltd. is engaged in the provision of distributing natural gas. The company was founded on April 3, 2018 and is headquartered in Seoul, South Korea.

Onsan Tank Terminal Co., Ltd. engages in the storage and handling of dangerous goods. Its services include Cargo storage and warehousing, Blending, Ship refueling serving and Additional services. The company was founded on March 18, 2010 and is headquartered in Ulsan, South Korea.

Daehan Gm Corp. engages in the manufacture and supply to gas meters. The company was founded on March 3, 1989 and is headquartered in Incheon, South Korea.

Yesco Service Co., Ltd. is engaged in distributing gas and gaseous fuels. The company was founded on April 18, 1994 and is headquartered in Seoul, South Korea.