About Us

Group Companies

TANAKA group companies in Japan and overseas collaborate as precious metal specialists to explore the potential of precious metals and create a sustainable future through innovation.

Company responsible for management of TANAKA

TANAKA PRECIOUS METAL GROUP Co., Ltd.

Wholly owned subsidiaries of TANAKA PRECIOUS METAL GROUP Co., Ltd.

TANAKA PRECIOUS METAL TECHNOLOGIES Co., Ltd.

Sales of Precious Metals (Platinum, Gold, Silver,and Others).Manufacture, Sales, Import and Export of various types of Industrial Precious Metals Products.
Refining and Recycling of Precious Metals.

Taiwan TANAKA Kikinzoku Kogyo Co., Ltd.

TANAKA Kikinzoku (Ningbo) Co., Ltd.

TANAKA Kikinzoku (Chengdu) Co., Ltd.

METALOR TANAKA Electrical Materials (Suzhou) Ltd.

TANAKA PRECIOUS METAL RETAILING Co., Ltd.

Retailing of gold and platinum jewelry, import jewelry, bridal jewelry, precious metals art objects and various commemorative gifts. Remodeling, repair and recycling used jewelry (RE:TANAKA). Selling and buying of gold and platinum bullion bars and coins.

TKT Co., Ltd.

Handling of bullion trading operations for other Group companies.

Wholly owned subsidiaries of TANAKA PRECIOUS METAL TECHNOLOGIES Co., Ltd.

TANAKA ELECTRONICS Co., Ltd.

Manufacturing of Various Bonding Wires, Technical Services.
The World Largest Bonding Wire Manufacturer.

TANAKA ELECTRONICS SINGAPORE (PTE.) LTD.

TANAKA ELECTRONICS (MALAYSIA) SDN. BHD.

TANAKA ELECTRONICS (HANGZHOU) CO., LTD.

TANAKA ELECTRONICS TAIWAN CO., LTD.

TANAKA ELECTRONICS TAIWAN CO., LTD. BRANCH OF SOUTHERN TAIWAN SCIENCE PARK.

TANAKA ELECTRONICS TAIWAN CO., LTD. TECHNICAL CENTER

EEJA Ltd.

Development, manufacture, sales and export of precious metal plating solutions and base metal plating solutions, other related chemical products, and plating equipment.

Metalor Technologies SA

Precious metals recovery and refining, production and sales of electrical contacts, and production and sales of plating solutions and plating equipment.

Wholly owned subsidiaries of EEJA Ltd.

Mitomo Semicon Engineering Co., Ltd.

Manufacture plating equipments for semiconductor wafers and electromic components

Affiliated companies of TANAKA PRECIOUS METAL TECHNOLOGIES Co., Ltd.

Nippon PGM Co., Ltd.

Collection and Smelting of Spent Automobile and Petrochemical Catalyst for Recovery of Platinum Group Metals.
*Equity ratio: TANAKA PRECIOUS METAL TECHNOLOGIES Co., Ltd. 40%

Nippon PGM America, Inc.

Sampling of used catalysts for cleaning automotive exhaust gas
*Equity ratio: TANAKA PRECIOUS METAL TECHNOLOGIES Co., Ltd. 40%

Nippon PGM Europe S.R.O.