1960~1970's 1978 Developed polyethylene terephthalate (PET) resin for bottles for the first time in Korea 1976 Initial Public Offering Sunkyong Synthetic Fiber merged with Sunkyong Chemical Fiber 1969 Establishment of Sunkyong Synthetic Fiber Co., Ltd. ▲ Establishment of Sunkyong Synthetic Fiber Co., Ltd. 1970's
