CFR›Title 31›Subtitle A›Part 21›Subpart C ContainsSection 21.300CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart C—Activities by Other Than Own Employees Sections 21.300 § 21.300 Professional and technical services. Previous B Subpart B—Activities by Own Employees Next D Subpart D—Penalties and Enforcement