| Company Name | Details of Business | Country/Region |
|---|
| East Asia |
| Shanghai Summit Metal Products Co., Ltd. | Shearing, slitting, and sale of steel sheets | China |
| WUXI SUMMIT NIKKA METAL PRODUCTS CO.,LTD. | Stock, sale, and processing of tool steel | China |
| Tianjin Hua Zhu Metal Products Co., Ltd. | Shearing, slitting, and sale of steel sheets | China |
| Foshan Summit Nikka Mold & Metal Products Co., Ltd. | Stock, sale, and processing of tool steel | China |
| Wuxi Summit-Bao Metal Products Co., Ltd. | Shearing, slitting, and sale of steel sheets | China |
| Mason Metal Industry Co., Ltd. | Shearing, slitting, and sale of steel sheets | Taiwan |
| Asia & Oceania |
| PT. Super Steel Karawang | Shearing, slitting, and sale of steel sheets | Indonesia |
| Calamba Steel Center Inc. | Shearing, slitting, and sale of steel sheets | Philippines |
| Mactan Steel Center Inc. | Shearing, slitting, and sale of steel sheets | Philippines |
| Hanoi Steel Center Co., Ltd. | Shearing, slitting, and sale of steel sheets | Vietnam |
| Saigon Steel Service & Processing Corp., Ltd. | Shearing, slitting, and sale of steel sheets | Vietnam |
| Steel Centre Malaysia Sdn. Bhd. | Shearing, slitting, and sale of steel sheets | Malaysia |
| Sumiputeh Steel Centre Sdn. Bhd. | Shearing, slitting, and sale of steel sheets | Malaysia |
| the Americas |
| Servilamina Summit Mexicana S.A. de C.V. | Shearing, slitting, and sale of steel sheets | Mexico |
| Europe, Middle East, Africa & CIS |
| Steel Center Europe, S.R.O. | Shearing, slitting, and sale of steel sheets | Czech |
