KJ Pretech Co., Ltd. manufactures and sells ultra-precision components in South Korea, Japan, Taiwan, China, Hong Kong, Singapore, Malaysia, and Thailand. The company operates through Black Light Unit (BLU), Precision Optics, and Mold divisions. Its principal products include precision molds, injection molding parts, and optical parts. The company also provides components for mobile phones, such as barrel, a mobile camera material; BLUs; lens; and light guide plates. KJ Pretech Co., Ltd. was founded in 1994 and is headquartered in Hwaseong, South Korea.