Automotive

Working to become a mega-supplier with the wiring harness business at the core

Overview of business

The automotive industry is undergoing a period of drastic changes, with the increasingly rapid adoption of CASE* and the entry of companies from other industries into the market. We are leveraging our global presence in 33 countries around the world and bringing together our global resources to contribute to advancement in mobility.
Our main product, wire harnesses, are laid throughout an automobile. Advanced technology is required to produce harnesses that can transmit power and information reliably while withstanding extreme vibration and heat. The Sumitomo Electric Group leads the world by a mile in harness development, with a whopping one in four cars around the world using our harnesses.
We are steadily promoting the use of aluminum harnesses, which contribute to weight reduction in vehicles, and our connecting technologies are essential for realizing connected cars and autonomous driving, which must handle a huge amount of information, as well as for achieving widespread use of hybrid and electric vehicles. We will continue to contribute to the next generation, where automobiles are connected with people and society.

* A term for the trends in the automotive industry; an acronym for Connected, Autonomous, Shared and Electric

Initiatives to carry out our mid-term management plan

In response to the current decline in global automobile demand due to COVID-19, we will flexibly adjust production capacity in anticipation of future economic recovery, and focus on further cost reduction activities to rebuild a stronger and leaner business structure. In our business plan, we have pledged to work toward becoming a mega-supplier with the wiring harness business at the core. We will achieve this by creating products for electric vehicles, such as high-voltage wiring harnesses; electrical products for electronic control systems used in automobiles; and new CASE products such as high-speed communication connectors. We will also work to grow our market share overseas. Sumitomo Riko Company Limited will work to become profitable again by expanding sales, improving productivity and reducing costs for products such as automotive anti-vibration rubber products and hoses around the world, and by developing new products for the next generation of automobiles.

VISION 2022 Mid-term Management Plan: Segment Strategy

VISION 2022 Mid-term Management Plan: Segment Strategy
VISION 2022 Mid-term Management Plan: Segment Strategy
High-strength aluminum wiring harness
High-strength aluminum wiring harness
High-strength aluminum wiring harness

Examples of our initiatives to solve social issues

High-strength aluminum wiring harness

We developed aluminum alloy electric wires that conduct electricity as effectively as copper while being around half as heavy. We began selling our aluminum harnesses in 2010. After further discussion with automotive manufacturers, we began working to develop high-strength aluminum to meet a variety of needs. In 2015, we succeeded in developing high-strength aluminum alloy electric wires, which are stronger than copper and flexible and heat-resistant enough to meet manufacturers' needs. Releasing high-strength aluminum wiring harnesses has made it possible to use aluminum wiring harnesses in areas with extreme vibration, such as around the engine. Our high-strength aluminum wiring harnesses are now used in many automobiles both in Japan and overseas. In addition to further contributing to improving fuel efficiency and reducing CO2 emissions by making automobiles lighter, they are helping to conserve rare resources as aluminum reserves are more abundant than copper.

We were the first in the world to make engine harnesses from highstrength aluminum alloy wires. This material has reduced the weight and cost of wiring harnesses.