Cal. Health & Safety Code § 113080
(b) No person shall be subject to the penalties of subdivision (a) for having violated provisions of this chapter if he or she establishes a guaranty or undertaking signed by, and containing the name and address of, the person residing in the State of California from whom he or she received in good faith the article, to the effect that the article conforms to all provisions of this chapter, designating this chapter.
If the guaranty is to the effect that the article is not in violation within the meaning of the federal act, as provided in Section 303 (c) of the federal act, it shall be sufficient for all the purposes of this chapter and have the same force and effect as though it referred to this chapter, unless at any time the standard for the article concerned under this chapter is higher than the standard for a like article under the federal act.