Nusa Tenggara Mining Corporation (Japan)

Investment in and financing of the Batu Hijau copper/gold mine development project in Indonesia

Summit CRM, Ltd. (Japan)

Domestic and international trade of carbon-related materials, refractories and materials, equipments for steel manufacturing

Petro Summit E&P Corporation (Japan)

Exploration, development, production and sale of and investment in oil and natural gas etc.; investment in and financing business of the same kind

Osakagas Summit Resources Co., Ltd. (Japan)

Exploration, development, production and sale of and investment in oil and natural gas

LNG Japan Corporation (Japan)

Trading of LNG, investment and financing related to LNG business

Enessance Holdings Co., Ltd.

Planning the strategy of Home Solution Business including LPG, controlling its subsidiaries, and LPG wholesale

SC Minerals America, Inc. (U.S.A.)

Investment in the Morenci copper mine, the Pogo gold mine in the U.S. and the Candelaria & Ojos del Salado copper mines in Chile

SC Mineral Resources Pty. Ltd. (Australia)

Investment in the Northparkes copper mine in Australia

Sumisho Coal Australia Pty. Ltd. (Australia)

Investment in coal mines in Australia

Petro Summit Pte. Ltd. (Singapore)

International trade of crude oil and petroleum products
Fuel blending for cargo and bunker sales in Singapore

Pacific Summit Energy LLC (U.S.)

Sale of natural gas

Summit Petroleum Limited (U.K.)

Exploration, development, production, sales of and invenstment in oil and natural gas in the UK North Sea

Sumitomo Shoji Chemicals Co., Ltd.

Sale of chemical products

Soda Ash Japan Co., Ltd

Sales of soda ash in Japan

Sumitronics Corp.

Sale of electronic products and parts

Summit Pharmaceuticals International Corporation

A comprehensive provider of a wide range of servises in pharmaceutical field from drug discovery / new drug licensing to pharmaceutical key material supply

Summit Agro International, Ltd.

Sale of agricultural chemicals, fertilizers, and other materials; sale and leasing of related equipment

CANTEX (U.S.A.)

Manufacturing and sales of PVC pipes and fittings

SUMMIT PETROCHEMICAL TRADING INC. (U.S.A.)

Trading of upstream petrochemical products globally such as Olefins and Aromatics

Interacid Trading S.A. (Switzerland)

International trade of sulfur and sulfuric acid

Sumitronics Taiwan Co., Ltd. (Taiwan)

Sale of electronic materials and parts

Technoclean Philippines, Inc. (Phillippines)

High-tech cleaning service of clean room garments and precision components. Sale of electronic materials and parts.

Sumi Agro Europe (U.K.)

Investment in agricultural chemicals in Europe

Summit-Agro Argentina (Argentina)

Sale of agricultural chemicals

The Hartz Mountain Corporation (USA)

Manufacturing and sales of Pet care relatives