Welcome to PS Japan !

Company Information

PS Japan is the largest pure-play polystyrene (PS) manufacturer in Japan, parents company are Asahi Kasei Corp. and Idemitsu Kosan Co.,Ltd..

PS Japan offers PSJ-POLYSTYRENE featuring world-leading quality and reliability, manufactured with Japan’s largest-scale polystyrene production infrastructure, and utilizing the extensive experience and knowledge accumulated ever since the beginning of Japan’s polystyrene industry. We also develop new products and new value to meet customers’ needs by utilizing our product development ability, which is among the world’s most advanced.

ASAHI KASEI CORPORATION Idemitsu Kosan Co.,Ltd.