; and (iv) contains a statement that the agent acknowledges that the duties of the agent— (I) may not be assigned to another person; and (II) remain in effect until withdrawn or replaced by the foreign manufacturer or producer. (4) Minimum size This subsection shall only apply to foreign manufacturers and producers that manufacture or produce covered products in excess of a minimum value or quantity the head of the applicable agency shall prescribe by rule for purposes of this section. Such rules may include different minimum values or quantities for different subcategories of covered products prescribed by the head of the applicable agency for purposes of this section. (b) Registry of agents of foreign manufacturers (1) In general The Secretary of Commerce shall, in cooperation with each head of an applicable agency, establish and keep up to date a registry of agents registered under subsection (a). (2) Availability The Secretary of Commerce shall make the registry established under paragraph (1) available— (A) to the public through the Internet website of the Department of Commerce