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Source-reviewed study unitAbout 10 minutes

Test substantial transformation

Ability objective

Use the regulatory name-character-use framework without treating every U.S. process as origin-changing.

Answer first

Core rule

For an article outside the Part 102 marking branch, further work changes country of origin only when it effects a substantial transformation. Under §134.35, U.S. manufacture producing an article with a name, character, or use different from the imported article makes the U.S. manufacturer or processor the ultimate purchaser; the imported article may be excepted from individual marking, but its outermost container remains subject to marking. Whether a real process satisfies the test is fact-specific and may require CBP rulings or case law. This is the current-law baseline reviewed on 2026-08-18; for a CBLE question, confirm the CFR and other references designated for that exam sitting before choosing the exam answer.

Authority and lookup route

Locate the rule before returning to the facts. Links point to government or official publications.

19 CFR 134.1(b)

19 CFR -> Part 134 -> §134.1(b) country-of-origin definition

Current legal baseline reviewed 2026-08-18; confirm the edition designated for the exam sitting

19 CFR 134.35

19 CFR -> Part 134 -> §134.35 articles substantially changed by manufacture

Current legal baseline reviewed 2026-08-18; confirm the edition designated for the exam sitting

19 U.S.C. 1304(a)-(b)

U.S. Code -> Title 19 -> §1304 -> article and container marking

Current legal baseline reviewed 2026-08-18; confirm the edition designated for the exam sitting

Reference lookup task

Find the name-character-use language in §134.35 and the separate sentence that preserves outermost-container marking.

Route: Read §134.35(a) in two passes: first for the transformation test, then for the consequence for the article and its outermost container.

Worked example

Non-Canada/Mexico metal blanks are imported and processed in the United States. The facts expressly establish that the process creates finished gears with a different name, character, or use. Who is the ultimate purchaser of the imported blanks, and what marking remains?

  1. 1Confirm that the ordinary §134.35 branch, not Part 102, applies.
  2. 2Match the stipulated different name, character, or use to the substantial-transformation rule.
  3. 3Treat the U.S. manufacturer or processor as the ultimate purchaser of the blanks.
  4. 4Except the blanks from individual marking while marking their outermost containers as required.

Conclusion: The U.S. manufacturer is the ultimate purchaser; the imported blanks may be excepted from individual marking, but their outermost containers must be marked.

Common traps

  • Assuming any assembly, finishing, or repacking in the United States is a substantial transformation.
  • Finding a transformation and then forgetting the outermost-container requirement.
  • Turning one fact-specific example into a universal rule for the same product name.