Kuo Chung Chi

Gold Sun Technology Co., Ltd. engages in the trading of light emitting diode (LED) materials, solar materials and flame resistant materials. Its products include LED chip, LED frame, LED phosphor, silicon wafer, solar cell, flame retardant materials, and touch panel thin film. The company also provides equipment manufacturing service. Gold Sun Technology was founded on March 19, 1973 and is headquartered in Taipei, Taiwan.

Rigidtech Microelectronics Corp. principally engages in the research, development, production, and sale of patterned sapphire substrates. The company was founded on August 6, 2004 and is headquartered in Taoyuan, Taiwan.

High Power Optoelectronics, Inc. engages in the research, development, manufacture and sale of Light Emitting Diode (LED) chips and wafers. Its business activities include the manufacture and sale of electronic components, lighting equipment, computers and peripherals; and manufacture and sale of silicon substrate blue & green nitride LED wafers and grains. Its products include silicon substrate red, yellow, yellow green LED epitaxial wafers and grain. The company was founded on September 14, 2005 and is headquartered in Taichung, Taiwan.