Sec. 1. The articles specifically listed hereunder as classified under Section 104 of Republic Act Number Nineteen Thirty-Seven as amended by Presidential Decree Number Thirty Four shall pay the following rates of import duty:
Tariff Heading No.
Description of Articles
Rate of Duty
28.40
Phosphates, hypophosphates and phosphates
A. Articles not included in Subheading B
ad val. 10%
B. Sodium tripolyphosphates
ad val. 30%