Cal. Food and Agricultural Code § 15301

(a) On and after July 1, 2001, it is unlawful for any person directly, or through another, to manufacture for sale, advertise, deliver or otherwise provide, offer for sale or lease, sell, lease, possess, or use any device in this state that is not registered pursuant to this chapter, or for which the registration has been suspended or canceled, except as provided in subdivision (b), any other provision of this chapter, regulations adopted by the director, or a notice or order of suspension or cancellation of a device. (b) For devices in use in California prior to January 1, 2001, the director may grant reasonable extensions of time for the submission or review, or both the submission and review, of data in support of an application for registration. Before the director may grant an extension of time, the applicant shall have made a good faith effort to comply with the requirements of this chapter and shall demonstrate to the satisfaction of the director that circumstances beyond the applicant’s control were the primary cause of the delay. (c) This section does not apply to any device manufactured solely for export outside this state and which is so exported.