No advertising literature relating to any brake fluid sold or to be sold in the State of Oklahoma shall contain any statement that the brake fluid advertised for sale has been approved by the Corporation Commission of Oklahoma unless such brake fluid has been inspected by the Corporation Commission and has been found to meet the standards in this Act, in which event such statement, together with the permit number of the wholesaler or distributor, may be contained in any labeling and advertising literature where such brand or trade-mark or brake fluid is being advertised for sale.

Laws 1957, p. 90, § 9.