Certificates of Origin can be broadly classified into types, namely Ordinary Certificates of Origin and a Preferential Certificates of Origin.
1. Ordinary Certificate of Origin: An Ordinary Certificate of Origin is a document that can be used to satisfy buyers that the products exported are wholly obtained, produced or manufactured in Thailand.
2. Preferential Certificate of Origin: A Preferential Certificate of Origin is a document that can help improve the competitive edge of exports by enabling buyers to claim preferential tariff treatment when importing the products under one of the Schemes of Preferences or Free Trade Agreements.