セイカ Company Profile

Our company, founded in 1955, focuses on the manufacturing and sales of high-performance polymer materials as a manufacturer of aromatic diamines!

Seika has made aromatic diamines, which are essential raw materials for products such as heat-resistant polyimide resins, its main product. We have earned great trust from customers both domestically and internationally, who say, "For aromatic diamines, choose Seika." Since our founding, we have upheld the corporate philosophy of "Quality First, Cost Reduction, and Research Efforts," striving to provide better products at lower prices in a stable manner while honing our technology. Moving forward, we will further promote safe operations as a fundamental principle, taking into account the SDGs and being mindful of society and the environment. We will not only ensure the stable supply of high-quality products but also accurately capture customer needs and continue our corporate activities with a sense of mission to support customers in the development of new materials and new products.