The document provides guidelines for procurement of goods, works and services for projects financed by the Asian Development Bank (ADB). It outlines key principles such as open competition, economy and efficiency in procurement, transparency, and eligibility of bidders from ADB member countries. The guidelines apply to all contracts financed by ADB and describe the procedures for international competitive bidding as well as other acceptable procurement methods. Advance contracting is permitted but borrowers undertake related risks until finalizing the financing agreement with ADB.