• AOKI OIL INDUSTRIAL CO.,LTD.
  • IDEMITSU KOSAN CO.,LTD.
  • ITOH OIL CHEMICALS CO.,LTD.
  • WATERSTONE PHARMACEUTICALS, INC
  • EXXONMOBIL CHEMICAL ASIA PACIFIC
  • OXEA JAPAN CO.,LTD.
  • KH NEOCHEM CO., LTD.
  • KOYO KAGAKU CO.,LTD.
  • SHANDONG SHIDA SHENGHUA CHEMICAL GROUP CO.,LTD.
  • SANYO CHEMICAL INDUSTRIES,LTD.
  • JNC CORPORATION
  • JXTG NIPPON OIL & ENERGY CORPORATION
  • J-PLUS CO.,LTD.
  • SHOWA DENKO K.K.