Limited or restrictive tendering procedures are , in line with the wto gpa provisions , only permissible under specified exceptional circumstances . where the nature of the contract ( such as a contract that is time critical or one that requires particularly high levels of skills and proven reliability ) dictates that tenders have to be invited from qualified supplierscontractors , selective tendering or prequalified tendering may be used 和世贸采购协定的规定一样，有限度或局限性招标程序只有在指定的特殊情况下，方可采用。若限于合约的性质，例如合约必须依时完成，或合约要求特别高超的技术和经验证的可靠性，必须向合资格的供应商承包商招标，便可采用选择性招标或资格预审招标程序。
Tob is frequently applied to civil constructions among other iad projects . in the third chapter , the tob of iad civil construction projects was discussed , including tob modes , phases and procedure . and a fuzzy evaluation model was formulated by analytic hierarchy process and fuzzy comprehensive evaluation 农业综合开发项目招标很大一部分是工程招标，第三章对农业综合开发项目工程招标方式、招标阶段划分、招标程序进行了研究；并利用层次分析法和模糊综合评判法，建立了工程模糊评判评标模型。
In response to a chinese newspaper article today ( august 29 ) alleging that the procurement of eurocopter ec155 b1 helicopter was related to the lobbying over visa - free arrangements for sar passport holders , a spokesman for the security bureau pointed out that the procurement of eurocopter ec155 b1 helicopters by the government flying service was done in accordance with the government s established tendering procedures 保安局就今日（八月二十九日）一份中文报章有关政府飞行服务队购买海豚直升机是与争取特区护照免签证安排的报导，保安局发言人指出，政府飞行服务队购买海豚直升机是根据政府既定的招标程序，也是依照世贸采购协定作世界性公开招标。
The object of the wto gpa is to provide for open and fair competition amongst domestic and foreign suppliers and service providers . to this end , the agreement prescribes a set of requirements regarding non - discriminatory treatment of goods , services and service suppliers , qualification of suppliers , tender procedures , tender specifications and challenge procedures 世贸采购协定的目标，是使本地及海外供应商及服务承办商有公开公平的竞争，方法是制订公平对待货品、服务及服务承办商的准则，及对供应商的投标资格、招标程序、招标规格及投诉程序等作出规定。
