Section 15320 Of Article 3. Device Registration From California Food And Agricultural Code >> Division 7. >> Chapter 7.5. >> Article 3.

. (a) A registrant at any time may request that the registration of any of its devices be voluntarily canceled. The request shall be in writing to the director and shall include a waiver of the registrant's right to a hearing on the cancellation.
  (b) The director shall mail a notice of voluntary cancellation of registration of the device to the registrant. The notice shall specify the effective date of the cancellation.