19 C.F.R. § 10.1018 – De minimis.

(a) General. Except as provided in paragraphs (b) and (c) of this section, a good that does not undergo a change in tariff classification pursuant to General Note 33, HTSUS, is an originating good if:
1. (1) The value of all non-originating materials used in the production of the good that do not undergo the applicable change in tariff classification does not exceed 10 percent of the adjusted value of the good;
2. (2) The value of the non-originating materials described in paragraph (a)(1) of this section is included in the value of non-originating materials for any applicable regional value content requirement for the good under General Note 33, HTSUS; and
3. (3) The good meets all other applicable requirements of General Note 33, HTSUS.
(b) Exceptions. Paragraph (a) of this section does not apply to:
1. (1) A non-originating material provided for in Chapter 3, HTSUS, that is used in the production of a good classified in that Chapter;
2. (2) A non-originating material provided for in Chapter 4, HTSUS, or a non-originating dairy preparation containing over 10 percent by weight of milk solids classified under subheadings 1901.90 or 2106.90, HTSUS, that is used in the production of a good provided for in Chapter 4, HTSUS;
3. (3) A non-originating material provided for in Chapter 4, HTSUS, or a non-originating dairy preparation containing over 10 percent by weight of milk solids provided for in subheading 1901.90, HTSUS, which is used in the production of the following goods:
  1. (i) Infant preparations containing over 10 percent by weight of milk solids provided for in subheading 1901.10, HTSUS;
  2. (ii) Mixes and doughs, containing over 25 percent by weight of butterfat, not put up for retail sale, provided for in subheading 1901.20, HTSUS;
  3. (iii) Dairy preparations containing over 10 percent by weight of milk solids provided for in subheading 1901.90 or 2106.90, HTSUS;
  4. (iv) Goods provided for in heading 2105, HTSUS;
  5. (v) Beverages containing milk provided for in subheading 2202.90, HTSUS; or
  6. (vi) Animal feeds containing over 10 percent by weight of milk solids provided for in subheading 2309.90, HTSUS;
4. (4) A non-originating material provided for in Chapter 7, HTSUS that is used in the production of a good classified under the following subheadings: 0703.10, 0703.20, 0709.59, 0709.60, 0710.21 through 0710.80, 0711.90, 0712.20, 0712.39 through 0713.10 or 0714.20, HTSUS;
5. (5) A non-originating material provided for in heading 1006, HTSUS, or a non-originating rice product classified in Chapter 11, HTSUS that is used in the production of a good provided for under the headings 1006, 1102, 1103, 1104, HTSUS, or subheadings 1901.20 or 1901.90, HTSUS;
6. (6) A non-originating material provided for in heading 0805, HTSUS or subheadings 2009.11 through 2009.39, HTSUS, that is used in the production of a good provided for under subheadings 2009.11 through 2009.39, HTSUS, or in fruit or vegetable juice of any single fruit or vegetable, fortified with minerals or vitamins, concentrated or unconcentrated, provided for under subheadings 2106.90 or 2202.90, HTSUS;
7. (7) Non-originating peaches, pears, or apricots provided for in Chapters 8 or 20, HTSUS, that are used in the production of a good classified under heading 2008, HTSUS;
8. (8) A non-originating material provided for in Chapter 15, HTSUS, that is used in the production of a good classified under headings 1501 through 1508, 1512, 1514, or 1515, HTSUS;
9. (9) A non-originating material provided for in heading 1701, HTSUS, that is used in the production of a good provided for in any of headings 1701 through 1703, HTSUS;
10. (10) A non-originating material provided for in Chapter 17, HTSUS, that is used in the production of a good provided for in subheading 1806.10, HTSUS; or
11. (11) Except as provided in paragraphs (b)(1) through (10) of this section and General Note 33, HTSUS, a non-originating material used in the production of a good provided for in any of Chapters 1 through 24, HTSUS, unless the non-originating material is provided for in a different subheading than the good for which origin is being determined under this subpart.
(c) Textile and apparel goods—(1) General. Except as provided in paragraph (c)(2) of this section, a textile or apparel good that is not an originating good because certain fibers or yarns used in the production of the component of the good that determines the tariff classification of the good do not undergo an applicable change in tariff classification set out in General Note 33, HTSUS, will nevertheless be considered to be an originating good if the total weight of all such fibers or yarns in that component is not more than 7 percent of the total weight of that component.
(2) Exception for goods containing elastomeric yarns. A textile or apparel good containing elastomeric yarns in the component of the good that determines the tariff classification of the good will be considered an originating good only if such yarns are wholly formed and finished in the territory of a Party.
(3) For purposes of this section, “wholly formed or finished” means when used in reference to fabrics, all production processes and finishing operations necessary to produce a finished fabric ready for use without further processing. These processes and operations include formation processes, such as weaving, knitting, needling, tufting, felting, entangling, or other such processes, and finishing operations, including bleaching, dyeing, and printing. When used in reference to yarns, “wholly formed or finished” means all production processes and finishing operations, beginning with the extrusion of filaments, strips, film, or sheet, and including drawing to fully orient a filament or slitting a film or sheer into strip, or the spinning of all fibers into yarn, or both, and ending with a finished yarn or plied yarn.