All warranty claims made by the retailer to the wholesaler, manufacturer, or distributor, for labor and parts must be paid within thirty days following their approval. All warranty claims must be either approved or disapproved within thirty days after their receipt, and any claim not specifically disapproved in writing within thirty days after the receipt must be construed to be approved and payment must follow within thirty days. Any part that is subject to a warranty claim and the retailer is required by the manufacturer to hold a part or parts for inspection, the inspection must be accomplished within sixty days from the date of the filing of the subject claim, otherwise the retailer has the right to scrap such parts without prejudicing the claim.