RITEK Corporation manufactures, processes, sells, imports, and exports optical information and memory products and related equipment across Taiwan, the Americas, Asia, Europe, Africa, Oceania, and other international markets. Its storage media lines include optical media such as CDs, DVDs, and Blu-ray discs, as well as electronic media like flash memory cards, USB flash drives, portable hard drives, and solid state drives. The company also provides solar modules, integrated solar systems, OLED display panels, ITO glasses, patterned sapphire substrates, metal masks, contact lenses, ozone antibacterial systems, and biological detection discs. In addition, it is involved in manufacturing organic electroluminescent displays, conductive glass, optical discs, and batteries; lighting equipment; venture investment; nursing services; real estate investment and leasing; electronic components; and offers silicone chemicals, concrete waterproofing, DIY repairs, home cleaning and personal care products, plastic precision injection products, and management consulting services, as well as retiring day care centers, public services, and catering services. RITEK Corporation was founded in 1952 and is headquartered in Hsinchu City, Taiwan.