CFR›Title 43›Subtitle A›Part 18›Subpart C ContainsSection 18.300CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart C—Activities by Other Than Own Employees Sections 18.300 § 18.300 Professional and technical services. Previous B Subpart B—Activities by Own Employees Next D Subpart D—Penalties and Enforcement