; or (B) not later than 90 days after submitting the request, the producer can provide to the Commission a physical sample to prove production capability. (6) People’s Republic of China product exception Fibers, yarns, and fabrics originating from the People’s Republic of China, as determined pursuant to section 102.21 of title 19, Code of Federal Regulations (or a successor regulation), are not eligible, in whole or in part, for inclusion on the list established under paragraph (1). (d) Commercial availability request defined In this section, the term commercial availability request means a request to modify the rules of origin with respect to a textile article under a free trade agreement to address the lack of commercial availability of a fiber, yarn, or fabric in the countries that are parties to the agreement. 4 Trade enforcement 241. Establishment of special enforcement unit of U.S. Customs and Border Protection to monitor the implementation of Uyghur Forced Labor Prevention Act (a) Establishment There is established in the Office of International Affairs of U.S. Customs and Border Protection a special enforcement unit tasked with monitoring the implementation by the United States of the Act entitled An Act to ensure that goods made with forced labor in the Xinjiang Autonomous Region of the People’s Republic of China do not enter the United States market, and for other purposes , approved December 23, 2021 ( Public Law 117–78