Xuzhou Tongxin Optoelectronic Technology Co., Ltd. is a joint venture invested by GCL Group AND Korea AND Company, and will devote itself to the research, development, production and sales of sapphire patterned substrate (PSS) market. At present, the planned total investment scale of the company will reach 654.38 billion US dollars, and the estimated production capacity will exceed 9 million pieces/year (equivalent to 2 inches).