First, let me express my determination that we will continue to strive to become a company recognized by all stakeholders as a “good company.” We believe that by providing products and technologies that meet customer needs, and by continuing business activities that contribute to society through the full utilization of our comprehensive capabilities, we can achieve the company’s sustainable growth and development.
Since our founding in Osaka in 1914 as a steel wholesaler, our company has a history spanning over a century. In 1984, we established the current Sunouchi Co., Ltd. as a comprehensive manufacturer of welding consumables, playing a key role in the construction of social infrastructure, and we are now seeking to make significant strides as we approach our 50th anniversary. Guided by the philosophy of “Sincere Manufacturing,” we will continue to make tireless and dedicated efforts to enhance our technical capabilities in pursuit of even higher quality and convenience.
Furthermore, by continuing to evolve flexibly in response to changing times and dramatic paradigm shifts, we will steadily aim to maximize our corporate value for the next century. We will also actively promote business areas such as DX and FA-related initiatives and overseas expansion, thereby putting global management and portfolio management into practice.
Please look forward to the future of Sunouchi as we strive to meet your diverse needs.

Toshihiko Nishijima
Representative Director
President and CEO
On the other hand, we developed new steel products, such as backing metal for columns (Kadopita), backing metal for the non-scalp method (CR-F), and hinges for splice plates for beam connection to meet the needs of users. We also have been receiving high praise by supplying ceramic tabs for thick plate welding of construction machinery and plant frame welding for steel structural welding besides building steel frames and developing special ceramics tabs and backup materials for steel bridges. Furthermore, we developed low-hygroscopic backup materials for hull welding to contribute to the shipbuilding country. Based on our corporate philosophy of sincere manufacturing, we will continue to enhance our Sunox products with the cooperation of university laboratories, public research institutes, and welding robot manufacturers, based on the opinions of our customers.