Every handler and producer-handler shall keep complete and accurate records of all milk, skim milk, and cream in unprocessed form which the handler or producer-handler purchases, or possession or control of which he or she acquires from any producer or other handler. A producer-handler shall include his or her own production in these records. Every handler and producer-handler shall also keep complete and accurate records by class usage of all milk, skim milk, and cream which he or she utilizes for processing.