Keiwa Incorporated 

KEIWA Incorporated manufactures and sells optical sheets and functional products in Japan. The company provides light diffusion sheets used in backlight units of liquid crystal displays of smartphones; components for special optical films, such as protective films of light collecting films, etc.; and advanced functional films and sheets used for display surface protection in the optical systems, as well as other applications. It also offers industrial packaging materials, industrial processing papers, and clean energy materials, as well as other industrial materials, such as construction and agricultural materials. The company was formerly known as KEIWA Commerce and Industry Co., Ltd. and changed its name to KEIWA Incorporated in 1999. KEIWA Incorporated was founded in 1948 and is headquartered in Tokyo, Japan.