(1) Notwithstanding the provisions of WAC 314-12-140, persons licensed under RCW 66.24.200 as wine distributors and persons licensed under RCW 66.24.250 as beer distributors may sell at wholesale nonliquor food products on thirty days' credit terms to retailers. Complete and separate accounting records shall be maintained for a period of three years on all sales of nonliquor food products.

(2) Nonliquor food products include all food products for human consumption as defined in RCW 82.08.0293 as it exists on July 1, 1987, except that for the purposes of this section bottled water and carbonated beverages, whether liquid or frozen, shall be considered food products.

(3) For the purpose of this section, the period of credit is calculated as the time elapsing between the date of delivery of the product and the date of full legal discharge of the retailer, through the payment of cash or its equivalent, from all indebtedness arising from the transaction.

(4) If the board finds in any instance that any licensee has violated this section by extending or receiving credit in excess of the thirty days as provided for by this section, then all licensees involved shall be held equally responsible for such violation.