Seamless Green China (Holdings) Limited, an investment holding company, manufactures and trades in LED and related products in the People's Republic of China and Hong Kong. It operates through four segments: LED, Optoelectronic, Liquor, and Sapphire. The company also manufactures and sells optoelectronic products and watch crystals for use in the watch products. In addition, it engages in the trading of liquor, wine, and optoelectronic products; and property investment activities. The company was incorporated in 2001 and is headquartered in Sheung Wan, Hong Kong.