Haegang Fenster Co., Ltd. is one of Korea's leading manufacturers and exporters of PVC system windows and additional fittings. Since its establishment in 1991, the company has continued to make efforts to develop technology especially for window manufacturing.

Haegang Fenster Co., Ltd. has become the leading system window company in Korea, and by reducing heating expenses up to 60% and using semi-permanent PVC, the company has received energy-efficient ratings for its products. Furthermore, the company has received ISO 9001 certification from Kotric Certification Center and JIS certification from Japan.

Haegang Fenster Co., Ltd. is a privately owned company with a registered capital of nearly US$2 million. The company employs a workforce of 180, including ten technicians and six quality assurance staff. Annual revenue is in excess of US$15 million, approximately one percent of which is accounted for by exports. The company mainly exports to the markets of the Asia Pacific and East Asia.