Kuo Jui Chang

Prior Co. Ltd. is a global provider of chemical raw materials, specializing in high-tech electronic materials and precision chemical raw materials. The private company is based in Taipei, Taiwan, and has subsidiaries in Hong Kong. The Taiwanese company has subsidiaries in Hong Kong, Guangzhou, Xiamen, Shanghai, Qingdao, Chengdu, and Wuhan, as well as manufacturing plants in Yunlin, Taiwan, Shanghai, and Guangzhou. Its main products include alcohols, polyethers, AMINE, PPG nickel oxide, nickel oxide, aluminum oxide, aluminum hydroxide RESIN, resins, barium carbonate, electroplating, PLANTING, and nickel. The company was founded in 1976 and has received recognition from publications such as Tianxia Magazine and Business Weekly as one of the top 500 service companies. The CEO of the company is Yang Tsung Chen.

Procrystal Technology Co. Ltd. engages in the development, manufacture, and distribution of sapphire wafers and substrates. It offers polished sapphire wafers and patterned sapphire substrates which are applied in the manufacture of light emitting diodes (LEDs) and other semiconductor products. The company was founded on February 01, 2008 and is headquartered in Yilan, Taiwan.