3S Chemical Co., Ltd. produces and exports PVC materials for ceilings, walls, balconies and PVC window profiles.   The company is a leading supplier to major domestic companies such as LG Chemicals and Dong Yang Steel, and has received ISO 9002 certification from Korean Standards Association and the Keen Mark from Korea Institute of Construction Materials.   Established in 1999, 3S Chemical Co., Ltd. is a privately owned company with registered capital of US$200,000. The company employs a workforce of 29, including ten production engineers and two quality assurance staff.