Sec. 581. Standards of export; establishment; shipping without certificate forbidden; hearings. 582. Notice of establishment of standards; shipments under contracts made before adoption of standards. 583. Foreign standards; certification of compliance. 584. Shipments of less than carload lots; exemptions. 585. Fees for inspection and certification; certificates as prima facie evidence. 586. Refusal of certificates for violations of laws; penalties for violations. 587. Rules and regulations; cooperation with other agencies; compensation of officers and employees; effect on other laws. 588. Separability. 589. Definitions. 590. Authorization of appropriations.