TOKYO OHKA KOGYO CO., LTD. (Headquarters: Kawasaki, Japan/ President: Noriaki Taneichi, hereinafter the “Company”) has decided to construct Pyeongtaek Plant, the second site in the area, in its consolidated subsidiary TOK Advanced Materials Co., Ltd. (Headquarters: Incheon Metropolitan City, South Korea, hereinafter “TOKAM”) in a site for plant in Pyeongtaek, Gyeonggi Province, South Korea.

TOKAM was established in 2012 as a site for research and development, manufacturing and sales of photoresists in South Korea under our customer-oriented strategy and has since led the expansion of the adoption of the Group’s products in South Korea. In response to further growth in demand, we have decided to acquire a new site for plant as announced in February 2024. Please refer to our press release dated February 13, 2024, “Notice of Purchase of a Site for Plant in Korean Subsidiary” for details.

In the Phase 1 construction of the Plant, we will build a new high-purity chemical manufacturing building with the aim of establishing a system for stable supply of high-purity chemicals in South Korea. The new manufacturing building will be equipped with cleanroom areas that meet the high cleanliness standards required for cutting-edge semiconductor manufacturing, enabling manufacturing of higher-quality products.

The Company has formulated “tok Medium-Term Plan 2027” and aims to build a robust supply chain. While assessing the demand for our materials in South Korea, we will consider investing in the enhancement of our supply capacity for electronic functional materials.

 

【Pyeongtaek Plant: Phase 1 Construction Overview】

1.        Location:                　          　Pyeongtaek, Gyeonggi Province, South Korea

2.        Building area:        　          　Approximately 6,300 m² 

3.        Construction details:　          　Includes a high-purity chemical manufacturing building,warehouses and ancillary facilities

4.        Investment amount:              　Approximately 12.0 billion yen

5.        Scheduled start of operations: 　Second half of 2027

 

【Future outlook】

The impact of this construction on the Company’s financial results has already been reflected in the consolidated financial forecasts announced on August 6, 2025.

 

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