Former name of Y.C. Optotech Inc. — Yiow Chie Industrial Co., Ltd. was founded in 1975. The company was located in Penang Malaysia, primarily manufacturing rectifier diode. After 1989, the factories were then moved to China for manufacturing LED for more than 20 years as of today. In 2009, Yiow Chie Industrial Co., Ltd. was renamed. The company is now known as Y.C. Optotech Inc..