English language requirement
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
All words, statements and other information required by or under authority of the Act and the rules and regulations thereunder to appear on the stamp, tag, label, or other mark of identification, shall appear in the English language. If the product bears any stamp, tag, label, or mark of identification which contains any of the required information in a language other than English, all of the required information shall appear both in such other language and in the English language.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.