According to Yonhap News,

On August 20th, Tokyo Ohka Kogyo (TOK), a global leader in core semiconductor materials, held a groundbreaking ceremony at the Poseung Industrial Complex in Pyeontaek, Gyeonggi Province and began the construction of its manufacturing plant.

TOK Advanced Materials will invest KRW 101 billion to build a high-purity chemical products and photoresist manufacturing facility on a 55,000㎡ plot in Poseung Industrial Complex, which is scheduled for completion by July next year.

'Photoresist' is a key semiconductor material used to draw circuits on silicon wafers.

TOK is the world's leading photoresist producer, supplying to global companies such as Samsung Electronics, SK hynix, TSMC, and Intel. TOK Advanced Materials is TOK's Korean subsidiary.

The construction of the TOK Advanced Materials Pyeongtaek factory is a follow-up action stemming from the investment agreement signed by Gyeonggi Province Governor Kim Dong-yeon during his visit to TOK's headquarters in Kanagawa Prefecture, Japan, in April 2023.

Gyeonggi Province anticipates that the establishment of TOK's manufacturing facility in the Poseung region, a gateway to the west coast, will enhance the self-sufficiency rate of core semiconductor materials for domestic global semiconductor companies such as Samsung Electronics and SK hynix.

Governor Kim stated, "With the groundbreaking of the TOK manufacturing facility, we are setting a milestone in making Gyeonggi Province a semiconductor international hub. I expect this will contribute to securing a stable production base for core semiconductor materials, improving supply chain stability and technological self-reliance."

He added, "TOK CEO Taneichi Noriaki mentioned plans to build a second plant following the Pyeongtaek Plant 1. Both Gyeonggi-do and Pyeongtaek-si will provide active support. Since my inauguration, I promised to attract over KRW 100 trillion in investments, and we have already achieved KRW 91 trillion, with the goal expected to be met in about two months."

The groundbreaking ceremony was attended by around 100 people, including Governor Kim, Pyeongtaek Mayor Jeong Jang-seon, TOK CEO Taneichi Noriaki, TOK Advanced Materials CEO Kim Gi-tae, and officials from SK hynix and Samsung C&T.

Governor Kim's attendance at the groundbreaking ceremony was the first event in his "People's Economy Field Tour," which will continue until October.

After the ceremony, Governor Kim plans to meet with representatives from automotive and parts companies at the Pyeongtaek Port Marine Center to listen to concerns about export challenges, such as U.S. tariffs, and will also visit heat-relief shelters and traditional markets.


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Source: Yonhap News (August 20, 2025)

** This article was translated from Korean.