N.H. Rev. Stat. Ann. § 485:16

Whoever violates any of the provisions of RSA 485:8-13, but not RSA 485:8, II, or fails to comply with the lawful orders and requirements of the department duly made pursuant to those sections, or whoever hinders or obstructs any inspector in the pursuit of his lawful duty in respect to such sections, shall be guilty of a misdemeanor if a natural person, or guilty of a felony if any other person.