Toyo Tanso Co., Ltd. Iwaki Plant

Material block

Isotropic graphite

Helping the world through the thorough exploration of carbon’s potential

Ceramic
Stone Product Manufacturing

Area Yoshima
Industrial ParksIwaki-yoshima Industrial Park

Company Overview

Our company started as a manufacturer of carbon brushes with the foundation of Kondo Carbon Kogyosho in 1941. We went on to lead the industry in the development of isotropic graphite through hydrostatic press forming methods, and in 1974 built the Ohnohara plant (Kagawa Prefecture/Site of current Manufacturing Technology Center) and successfully began the mass production of the product. In 1985 we built our Takuma plant (Kagawa Prefecture / Site of current
Takuma Office) and fortified our production capabilities. Then, in April 1999, we constructed our Iwaki plant in order to support customers in eastern Japan. Today we are one of the world’s largest and leading manufacturers. Domestically, we have material manufacturing and processing locations primarily in Kagawa Prefecture, with sales offices located throughout Japan. Internationally, we have founded local corporations in North America, Europe, China, and Southeast Asia to expand our operations globally. We have established systems of direct sales in all regions and work to understand our customers’ needs. Our products are utilized in a wide range of different fields.

Primary Products / Services

Manufacture, sale, and related processing of high-performance carbon products. (Iwaki plant) Processing of high-performance carbon products.
Our primary product is isotropic graphite, which is used in the following industries and is seeing growing usage in new areas.
①Electronics (single crystal silicon, solar cell, and compound semiconductor manufacturing equipment)
②Cutting-edge fields (nuclear power, aerospace, medical)
③General industrial machinery (industrial machinery bearings, electric discharge machining electrodes, metallurgical casting molds)
④Transportation equipment (pantograph contact strips, automotive parts)
⑤Electrical (generator, vacuum cleaner, and power tool brushes) (Bold Text: Primary product fields of the Iwaki plant)

IP & Licenses, etc.

Intellectual Property
●Patent No. 5860600 - Porous Carbon
●Patent No. 7053243 - Microorganism Immobilization Carrier
●Patent No. 6013940 - Oil Quenching Heat Treatment Furnace Tray
Manufacturing Method and Carburizing Treatment Method
●Patent No. 6615446 - Graphite-copper Composite Electrode
Material for Electrical Discharge Machining and Electrical Discharge
Machining Electrode Using the Material
Certifications / Licenses
●ISO 9001 Quality management systems (Company-wide certification)
●ISO 14001 Environmental management systems (Certified at 6 locations)
●2021 - Kurumin certification (3rd time) (Certification for companies providing support to families raising children) (Ministry of Health, Labor and Welfare)
●2020 - Certified as a leading company promoting women’s participation
in the workforce (Certified by Osaka City)
Awards / Commendations
●2023 - Awarded the Minister of Economy, Trade, and Industry Award and Excellence Award at the 9th Japan Manufacturing Awards (Prime Minister’s Commendation)
●2014 - Selected for the Global Niche Top Companies Selection 100 list (METI)

Company Strengths & Characteristics

●Pioneers of isotropic graphite
●2 forms of added value through material manufacturing and processing
(Equipped with the strengths of both a manufacturer and processer)
●Able to grasp customer needs through our direct sales system (Understand the specific wants of our customers)
●Expanded globally (able to meet the needs of areas around the globe)
●Unique research and development system (collection of customer and market information through direct sales system and collaborative relationships with universities and public institutions in cutting-edge fields)

Future Prospects & Areas of Interest

Mid-term management plan targets (FY2028): Sales 88 billion yen, operating profit 22 billion yen (operating profit margin 25%), ROE 12% Direction: Growth x Expanded Value
●Thorough expansion of high-growth, high-value-added businesses globally and establishment of competitive advantages
●Strengthened competitiveness of our core and stable businesses and achievement of sustainable growth
●Greatly increased on-site capabilities through revamped processes and labor and energy saving optimizations
●Rigorous strategic promotion of investment (including M&A)
●Establishing a strong, global governance system and management foundation
●Contributing to the environment and society through business
(expanding ESG-compliant products, etc.)
●Improved training for global talent to support the future

Helping the world through the thorough exploration of carbon’s potential