Our Manufacturing Division (Sulfur)

• Tsurumi Chemical Industry Co., Ltd.

Curing Agent

• Kawaguchi Chemical Industry Co., Ltd.
• Ouchi Shinko Chemical Industrial Co., Ltd.
• Sanshin Chemical Industry Co., Ltd.
• Kayaku Akzo Corporation
• ARKEMA Inc.
• NOF Corporation

Carbon Black

• Mitsubishi Chemical Corporation
• Nippon Steel Chemical Carbon Co., Ltd.
• Cabot Japan
• Asahi Carbon Co., Ltd.
• Tokai Carbon Co., Ltd.
• Fukuizumi Kasei K.K.

Filler

• Shiraishi Calcium Kaisha, Ltd.
• Nitto Funika Kogyo K.K.
• Nippon Paper Chemicals Co., Ltd.
• Okutama Kogyo Co., Ltd.
• Bihoku Funka Kogyo K.K.
• Sakai Chemical Industry Co., Ltd.
• Zeeklite Corporation
• Thiele Kaolin Company
• IMERYS Minerals Japan
• Nippon TALC Co., Ltd.
• Miyauchi Ebonite K.K.
• Nippon Crucible Co., Ltd.
• BASF Japan
• Asada Milling Co., Ltd.

Adhesive

• Nippon Polyurethane Industry
• Toagosei Co., Ltd.
• Dow Chemical Japan Ltd.
• Cemedine Co., Ltd.
• Sumitomo 3M Ltd.
• Koatsu Gas Kogyo Co., Ltd.

Accelerator

• Kawaguchi Chemical Industry Co., Ltd.
• Ouchi Shinko Chemical Industrial Co., Ltd.
• Sanshin Chemical Industry Co., Ltd.

Zinc Oxide & Magnesium Oxide

• Sakai Chemical Industry Co., Ltd.
• NEWLIME Co., Ltd.
• Kyowa Chemical Industry Co., Ltd.

Scorch Retarded Monomer

• Sartomer

Antioxidant

• Kawaguchi Chemical Industry Co., Ltd.
• Ouchi Shinko Chemical Industry Co., Ltd.
• Seiko Chemical Industry Co., Ltd.
• LANXESS KK
• SOLUTIA

White Carbon

• Tosoh Silica Corporation

Calcium Carbonate

• NEWLIME Co., Ltd.

Coloring Agent

• Sakai Chemical Industry Co., Ltd.
• Sanyo Color Works, Ltd.
• Sumika Color Co., Ltd.
• Toyo Ink Co., Ltd.
• Mitsubishi Materials Corp.

Processing Oil

• Kobe Oil Chemical Industrial Co., Ltd.
• Ajinomoto Fine-Techno Co., Inc.
• Japan Sun Oil Co., Ltd.
• Idemitsu Kosan Co., Ltd.
• Kao Corporation
• JX Nippon Oil & Energy Corporation

Softener, Stiffener and Peptizer

• Sumitomo Bakelite Co., Ltd.
• Cashew Co., Ltd.
• Mitsui Chemicals, Inc.
• TONEX Co., Ltd.

Plasticizer

• Mitsubishi Gas Chemical Company
• Daihachi Chemical Industry
• DIC Corporation
• Showa-Ether Corporation

Blowing Agent

• Eiwa Chemical Ind. Co., Ltd.
• Sankyo Kasei Co., Ltd.
• Otsuka Chemical Co.
• Matsumoto Yushi-Seiyaku Co., Ltd.

Other Rubber Chemicals

• Kao Corporation
• Lion Corporation
• Dow Corning Toray Co., Ltd.
• Shin-Etsu Chemical Co., Ltd.
• Ipposha Oil Industries Co., Ltd.
• Yamaichi Chemical
• Industries Co., Ltd.
• Asahi Glass Co., Ltd.
• Nihon Seiko Co., Ltd.
• Touko Sangyo K.K.
• Nikka Limited
• Toda Kogyo Corp.
• Sakai Chemical Industry
• Alcoa Inc.

Expendables

• Infinity Enterprise Inc
  Cleaning Solution (Environmentally Considerate)