RA 7898 Section 4(b) -
Capability, material, and technology development. — The AFP modernization program entails the development and employment of certain capabilities that can address the assessed threats: Provided, That the acquisition of air force, navy and army equipment and material of such types and quantities shall be made in accordance with the need to develop AFP capabilities pursuant to its modernization objectives: Provided, further,
That the acquisition of new equipment and weapons systems, shall be synchronized with the phase-out of uneconomical and obsolete major equipment and weapons systems in the AFP inventory: Provided, even further, That no major equipment and weapons system shall be purchased of the same are not being used by the armed forces in the country of origin or used by the armed forces of at least two countries: Provided, furthermore, That only offers from suppliers who are themselves the manufacturers shall be entertained: Provided, finally, That no supply contract shall be entered into unless such contract provides for, it is clear and unambiguous terms, an after-sales services and the availability of spare parts.