Cal. Food & Agr. Code § 62121
The director may require that each person that submits a bid for the sale to an agency of the United States government of market milk or any milk product which utilizes class 1 market milk shall file with the director, at the same time such bid is submitted, a complete copy of such bid and the following certification:
"The undersigned certifies that in sales by the undersigned to agencies of the United States Government, pursuant to the attached bid, for market milk or milk products utilizing class 1 market milk, as such class 1 market milk is defined in Chapter 2 (commencing with Section 61801), Part 3, Division 21 of the Food and Agricultural Code, the undersigned is complying with all California statutes and regulations pertaining to the establishment and enforcement by the Director of Food and Agriculture of minimum prices to be paid producers for such class 1 market milk."
All bids and certifications filed pursuant to this section shall be confidential and shall not be divulged except when necessary for the proper determination of any court proceeding or hearing before the director.
Ca. Food and Agric. Code § 62121