In 1985, Hi-ink Co., Ltd. Was established as a Local Ink manufacturer. We initially started as a manufacturer of Gravure and Flexography inks to provide quality products to growing printing markets in Thailand. In 1991, We changed Hi-ink Co., Ltd. to Thongkulthai Co., Ltd.

Today, Thongkulthai has evolved into a leading manufacturer of polymers, plastic, and pressure-sensitive adhesive in addition to its mainstay inks and coatings. With a head office in Bangkhuntien, the company continues to serve as an important strategic production platform on which Thonkulthai Co., Ltd. to expand its business activities across Asia.