Shigeji Yamanaka (Founder) started to research lacquer manufacturing and sell it in Osaka, Japan.

Daia Seiko Incorporated in Nabari, Mie Prefecture, Japan was established.

Started to commercialize and sell heat resistant paint Okitsumo.

Katsutoshi Yamanaki took office as president.

Okitsumo Heat and weather resistance marker pen and Okitsumo boron coat was commercialized.

The company name was changed to Okitsumo Incorparated

Super heat-resistance paint Tyranno coat was commercialized

Okitsumo USA Incorporated in the U.S. was established.

Okitsumo International (Asia) Co.,Ltd Heat Resistance Paint Factory and office in Thailand was established.

Okitech Incorporated to promote coating business was established.

The quality management system standard ISO 9001 certification was obtained.

The environment management system standard ISO 14001 certification was obtained.

Japan Hydrotect Coatings Incorporated was established (currently call TOTO Okitsumo Coating Co.,Ltd.),a joint venture involving photocatalyst business with TOTO Kiki Ltd. (currently call TOTO Ltd.)

Zhongshan Okitsumo Co.,Ltd in Zhongshan City, China was established.

Ceramic paint CERANO was commercialized.

• Designated as one of the 300 Dynamic Monozukuri SMEs in Japan by the Ministry of Economy,Trade and Industry(METI).

• Okitsumo Tintas Do Brasil Ltda. In Manaus, Brazil was established.

Fluorine paint for cookware POLYGO and lubricate coating UPL coating.

Okitsumo Paint (Changshu) Co.,Ltd. In Changshu city (Second factory) Incorporated was established.

Katsutoshi Yamanaka(advisor) was awarded the Order of the rising Sun, Gold and Silver Rays, by the Japanese government

• Okitsumo International (Asia) Co.,Ltd Coatings factory was established.

• Okitsumo Europe, S.A. in Barcelona, Spain was established.

Okitsumo (Paint) India Pvt. Ltd. In Gurgaon, India factory was established.

Bu Chemical Industry Co., was established in 1995 and became to affiliated company of Okitsumo International (Asia) Co.,Ltd. since 2023.