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Toho Kasei: Turning customers’ visions into reality

Article - December 13, 2022

Toho Kasei offers tailor-made solutions in engineering plastics and wet processes equipment for semiconductor equipment and electrical device manufacturers.


Established in 1956, Toho Kasei is a leading provider of engineered plastic products and semiconductor cleaning equipment. Consisting of two divisions –  engineering plastics and wet processes equipment – the company serves world-leading Japanese semiconductor equipment and electrical device manufacturing companies. Using reputed materials sourced from its parent company, Daikin Industries, Toho Kasei offers its clients unmatchable quality and performance, with the company now looking to expand its international customer base through technologies such as S-FORM and DUPRA.

With cumbersome clean room equipment in Japan aging rapidly, S-FORM offers companies a chance to replace said equipment without stopping production, “Our new equipment concept, S-FORM, makes it possible to renovate the entire wet equipment area simply by finding a space of only about 4m x 2m in the clean room, and device manufacturers have taken an interest in it,” says president Yoshihiko Misugi, who highlights that S-FORM is a direct response to demands “to maximize the effective use of the extremely expensive semiconductor manufacturing clean room space.”

Toho Kasei’s perfluoro elastomer "DUPRA", meanwhile, is a sealing material used in semiconductor equipment and an essential component for maintenance. “Major domestic equipment manufacturers also sell equipment to overseas customers. Most of the overseas customers who have purchased the equipment want to purchase the same seal material for maintenance. When that happens, it will be a great business opportunity for us as well as a great opportunity for customers to better understand DUPRA's strengths,” adds Mr. Mitsugi.

“By recognizing DUPRA's strengths, there are an increasing number of cases where we are considering improvements in sealing materials used in other equipment. Accurately grasping the customer's requests for a project; quickly developing, and making proposals; and implementing improvement activities to solve the customer's problems leads to new business. We believe that by focusing on improvement activities, we will see DURPA take a big leap in the future.”