Any person, firm, or corporation violating any provision of this chapter relating to cold storage warehousing shall be guilty of a gross misdemeanor and, upon conviction, punished for the first offense by a fine of not to exceed $700 or by imprisonment in the jail of the proper county for a period of not more than three months, or by both such fine and imprisonment, and for the second or subsequent offense by a fine of not to exceed $3,000 or by imprisonment in the jail of the proper county for a period of not to exceed one year or by both such fine and imprisonment.