PRESIDENTIAL DECREE NO. 1659

: The GSP is a program by developed countries under UNCTAD aimed at liberalizing world trade by reducing or eliminating tariff and other barriers to imports from developing countries to promote and expand their exports.
: Participation allows the Philippines to take advantage of trade opportunities under the scheme by gaining preferential treatment such as reduced or eliminated tariffs for its exports to developed countries.
: The United Nations Conference on Trade and Development (UNCTAD) is the international body that adopted and is overseeing the Generalized Scheme of Preferences.
: A certificate of origin is an official document certifying that the exported goods originate from the Philippines, which is necessary for the exporter to avail of the preferential tariff treatment under the GSP.
: The Bureau of Customs serves as the certifying authority responsible for issuing certificates of origin for qualifying Philippine exports under the GSP rules.
: Designation ensures compliance with UNCTAD's rules of implementation by having an authorized government entity that issues valid certificates of origin to facilitate export benefits under the GSP.
: The text of EO No. 335 does not specify penalties; its primary function is to designate the Bureau of Customs as the certifying authority.