Sumika Electronic Material Inc. was founded in 1913 and is a solely-owned subsidiary of Sumitomo Chemical. Headquartered in Tokyo, Japan, and with branches all around the world, Sumika operates in five main leading sectors: pharmaceuticals, basic chemicals, petrochemicals, electronic intelligence and agricultural chemicals.

Located in Wuxi New District, Sumika Electronic Materials (Wuxi) Co., was launched in July 2004 and is a foreign-funded enterprise fully invested by Sumika (Tokyo), with a total investment of $367 million and a registered capital of $162 million. Situated on a 400,000-square meter area, it produces polarizing films, back-light pervasion plates, LGP and other relevant products for LCD screens. It mainly engages in manufacturing semiconductors, special materials for components, high-technology chemicals for electronics to engineering plastics etc.