Ohtsu Chemical Company, Striving Towards anew Era. Since its foundation in 1971, Ohtsu chemical company, as the pioneer of technology and quality in the field of cast urethane rubber, has striven to exactly meet all the industries needs and support social development. With technology development focusing on Urethane rubber, and by promoting new material quality, new products and new technology, we apply urethane casting production technology and foster growth in the field of liquid ...