Welcome To Tok AmericaTOK’s Micro Processing
Technology Creates Inspiration

TOK’s state-of-the-art micro processing technology produces groundbreaking and innovative products. We have pioneered the development of polymer-containing functional photoresists based on photolithography technologies that are essential for the formation of semiconductor circuits.

Along with advancement in the micro-fabrication of an electronic circuit, our sophisticated technologies provide solutions to enhance the functionality of semiconductors, such as miniaturization, high-integration, multi-functionality, and high-speed. We offer various new materials necessary for many device manufacturers, including advanced immersion photoresists enabling the formation of several tens nanometer scale features.

Our Products

  • Semiconductor Manufacturing
  • Semiconductor Packaging Photo Resist
  • Auxiliary Chemicals
  • Medical Devices



About Us

California Transparency in
Supply Chains Act


We conduct audits of 28% of our Tier I direct suppliers every three years to verify that they are not at risk for violating anti-slavery and human trafficking laws. We do not use third-party verifiers. Our own supply chain management (SCM) team completes the verification process using internally developed assessment tools.

Our SCM team is currently unable to verify whether our subcontractors use labor brokers; however, we plan to enhance the audit process in the near future.


TOK Group is committed to fair labor practices within our supply chain. Our internal auditing team conducts announced audits and supplier surveys of direct suppliers to evaluate their compliance with our anti-slavery and human trafficking company standards. Audits consist of individual and group interviews with supervisors and management, as well as facility tours.


TOK Group strongly encourages direct suppliers to certify that they comply with anti-slavery and human trafficking laws in the country or countries in which they do business. However, we do not require such certification.

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