Chang You Gao

Nanjing J-crystal Photoelectric Technology Co., Ltd. engages in the research and development, manufacture, and marketing of sapphire products. It offers sapphire crystal ingot, sapphire substrate, sapphire watch glass, sapphire lens window, sapphire panels for mobile phones, sapphire fingerprint identification cover plates, and light emitting diode lighting products. The company was founded in April 2011 and is headquartered in Nanjing, China.

Nanjing Jingrui Semi Conductor Co. Ltd. engages in the research and development, trading, and production of semi-conductor optoelectronic materials. Its business scope includes technology development and transfer, production; and sale of semiconductor optoelectronic materials and devices. The company was founded on November 2, 2011 and is headquartered in Nanjing, China.