Company Outline


It has been over 90 years since our foundation.
During these years Lonseal has developed a strong line-up of products that have been highly praised for quality and technical excellence.
At Lonseal, it is our mission to devote our accomplishments to support the creation of genuinely pleasant living spaces.
Lonseal will continue contributing to society through the development of clean and ecological products, while always first considering the health and safety of human beings, and also for the protection of the environment.


Corporate Name Lonseal Corporation
Head Office Location 4-15-3 Midori, Sumida-ku, Tokyo 130-8570
Founded September 1928
Incorporated December 1943
Capital 5,007,910,000 yen
Listed in the Second Section of the Tokyo Stock Exchange (As of March 2023)
Sales Non-consolidated: 17,100,000,000 yen (As of March 2023)
Consolidated: 19,500,000,000 yen (As of March 2023)
Office Locations Headquarters (Tokyo), Tsuchiura Works (Tsuchiura),
Branch Office (Osaka), 8 other sales offices
Content of Business Manufacture and Sale of Plastic Products
Number of Employees 385(As of March 2023)