((a)) ** Handling of merchandise in zone; shipment of foreign merchandise into customs territory; appraisal; reshipment to zone** Foreign and domestic merchandise of every description, except such as is prohibited by law, may, without being subject to the customs laws of the United States, except as otherwise provided in this chapter, be brought into a zone and may be stored, sold, exhibited, broken up, repacked, assembled, distributed, sorted, graded, cleaned, mixed with foreign or domestic merchandise, or otherwise manipulated, or be manufactured except as otherwise provided in this chapter, and be exported, destroyed, or sent into customs territory of the United States therefrom, in the original package or otherwise; but when foreign merchandise is so sent from a zone into customs territory of the United States it shall be subject to the laws and regulations of the United States affecting imported merchandise: , That whenever the privilege shall be requested and there has been no manipulation or manufacture effecting a change in tariff classification, the appropriate customs officer shall take under supervision any lot or part of a lot of foreign merchandise in a zone, cause it to be appraised and taxes determined and duties liquidated thereon. Merchandise so taken under supervision may be stored, manipulated, or manufactured under the supervision and regulations prescribed by the Secretary of the Treasury, and whether mixed or manufactured with domestic merchandise or not may, under regulations prescribed by the Secretary of the Treasury, be exported or destroyed, or may be sent into customs territory upon the payment of such liquidated duties and determined taxes thereon. If merchandise so taken under supervision has been manipulated or manufactured, such duties and taxes shall be payable on the quantity of such foreign merchandise used in the manipulation or manufacture of the entered article. Allowance shall be made for recoverable and irrecoverable waste; and if recoverable waste is sent into customs territory, it shall be dutiable and taxable in its condition and quantity and at its weight at the time of entry. Where two or more products result from the manipulation or manufacture of merchandise in a zone the liquidated duties and determined taxes shall be distributed to the several products in accordance with their relative value at the time of separation with due allowance for waste as provided for above: , That subject to such regulations respecting identity and the safeguarding of the revenue as the Secretary of the Treasury may deem necessary, articles, the growth, product, or manufacture of the United States, on which all internal-revenue taxes have been paid, if subject thereto, and articles previously imported on which duty and/or tax has been paid, or which have been admitted free of duty and tax, may be taken into a zone from the customs territory of the United States, placed under the supervision of the appropriate customs officer, and whether or not they have been combined with or made part, while in such zone, of other articles, may be brought back thereto free of quotas, duty, or tax: , That if in the opinion of the Secretary of the Treasury their identity has been lost, such articles not entitled to free entry by reason of noncompliance with the requirements made hereunder by the Secretary of the Treasury shall be treated when they reenter customs territory of the United States as foreign merchandise under the provisions of the tariff and internal-revenue laws in force at that time: , That under the rules and regulations of the controlling Federal agencies, articles which have been taken into a zone from customs territory for the sole purpose of exportation, destruction (except destruction of distilled spirits, wines, and fermented malt liquors), or storage shall be considered to be exported for the purpose of—

((1)) the draw-back, warehousing, and bonding, or any other provisions of the Tariff Act of 1930, as amended, and the regulations thereunder; and

((2)) the statutes and bonds exacted for the payment of draw-back, refund, or exemption from liability for internal-revenue taxes and for the purposes of the internal-revenue laws generally and the regulations thereunder.

((b)) ** Applicability to bicycle component parts** The exemption from the customs laws of the United States provided under subsection (a) shall not be available on or before , to bicycle component parts unless such parts are reexported from the United States, whether in the original package, as components of a completely assembled bi­cycle, or otherwise.December 31, 19921992-12-31

((c)) ** Articles manufactured or produced from de­natured distilled spirits withdrawn free of tax from distilled spirits plant; products unfit for beverage purposes**

((1)) Notwithstanding the provisions of the fifth proviso of subsection (a), any article (within the meaning of ) may be manufactured or produced from denatured distilled spirits which have been withdrawn free of tax from a distilled spirits plant (within the meaning of ), and articles thereof, in a zone.

((2)) Notwithstanding the provisions of the fifth proviso of subsection (a), distilled spirits which have been removed from a distilled spirits plant (as defined in ) upon payment or determination of tax may be used in the manufacture or production of medicines, medicinal preparation, food products, flavors, or flavoring extracts, which are unfit for beverage purposes, in a zone. Such products will be eligible for drawback under the internal revenue laws under the same conditions applicable to similar manufacturing or production operations occurring in customs territory.

((d)) ** Foreign trade zones** In regard to the calculation of relative values in the operations of petroleum refineries in a foreign trade zone, the time of separation is defined as the entire manufacturing period. The price of products required for computing relative values shall be the average per unit value of each product for the manufacturing period. Definition and attribution of products to feedstocks for petroleum manufacturing may be either in accordance with Industry Standards of Potential Production on a Practical Operating Basis as verified and adopted by the Secretary of the Treasury (known as producibility) or such other inventory control method as approved by the Secretary of the Treasury that protects the revenue.

((e)) ** Production equipment**

((1)) ** In general** Notwithstanding any other provision of law, if all applicable customs laws are complied with (except as otherwise provided in this subsection), merchandise which is admitted into a foreign trade zone for use within such zone as production equipment or as parts for such equipment, shall not be subject to duty until such merchandise is completely assembled, installed, tested, and used in the production for which it was admitted.

((2)) ** Admission procedures** The person who admits the merchandise described in paragraph (1) into the zone shall, at the time of such admission, certify to the Customs Service that the merchandise is admitted into the zone pursuant to this subsection for use within the zone as production equipment or as parts for such equipment and that the merchandise will be entered and estimated duties deposited when use of the merchandise in production begins.

((3)) ** Entry procedures** At the time use of the merchandise in production begins, the merchandise shall be entered, as provided for in section 484 of the Tariff Act of 1930 [], and estimated duties shall be deposited with the Customs Service. The merchandise shall be subject to tariff classification according to its character, condition, and quantity, and at the rate of duty applicable, at the time use of the merchandise in production begins.19 U.S.C. 1484

((4)) ** Foreign trade zone** For purposes of this subsection, the term “foreign trade zone” includes a subzone.