OBS_VALUE: Unless international agreements say otherwise, international bidding shall be held only when:- The donors of procurement requests for holding international bidding or,- The procurements of providing advisory service, non-advisory service, construction and installation, mixture provision which domestic bidders are not able to satisfy requirements of procurement performance.Foreign suppliers can only participate on international bidding in Vietnam. To do so, they must:- have a partnership with domestic contractors or,- use local sub-contractors,Unless domestic contractors have not full capability to participate in any part of procurement.