Cal. Bus. & Prof. Code § 17043 : CALIFORNIA BUSINESS AND PROFESSIONS CODE — GENERAL BUSINESS REGULATIONS — PRESERVATION AND REGULATION OF COMPETITION — UNFAIR TRADE PRACTICES — OFFENSES AGAINST THE CHAPTER — Unlawful sale or gift for purpose of destroying competition TEXT PDF It is unlawful for any person engaged in business within this State to sell any article or product at less than the cost thereof to such vendor, or to give away any article or product, for the purpose of injuring competitors or destroying competition. Ca. Bus. and Prof'l. Code § 17043 Added by Stats. 1941, Ch. 526.