Cal. Food & Agric. Code § 18734

Every person that is engaged in business in intrastate commerce as a broker, renderer, animal food manufacturer, or wholesaler or public warehouseman of any livestock product or poultry product, or engaged in the business of buying, selling, or transporting in intrastate commerce, any dead, dying, disabled, or diseased livestock or poultry or any part of the carcass of any such animal, including any poultry, that died otherwise than by slaughter shall register with the director his name, the address of each place of business, and all trade names under which he conducts such business.