EXECUTIVE ORDER NO. 578

: Articles specifically listed in Annex A of the Executive Order, classified under Section 104 of Presidential Decree No. 1464, as amended, are subject to the tariff concession rates specified.
: If the basic Philippine rate of duty is lowered below the concession rate for articles listed in Annex A, such articles are automatically accorded the corresponding reduced rate of duty.
: The concession rates of duty apply only to GATT contracting parties and to countries that have a currently effective agreement with the Philippines providing the most-favored-nation treatment on tariffs.
: Articles listed in Annex B must pay the rate of duty specified in Column 3 but shall not be subject to any tariff rate higher than that specified in Column 4 of Annex B.
: If the basic rate is reduced, the articles automatically get the reduced rate. If the rate is increased, the higher rate applies provided it does not exceed the concession rate in Column 4 of Annex B; if it exceeds, the concession rate applies.
: The Order took effect on January 1, 1980.
: All such articles are subject to the newly prescribed rates of duty under the Order.
: The Order was signed by President Ferdinand E. Marcos and by Jacobo C. Clave, Presidential Executive Assistant.