In valuing any imported goods for duty assessment, Thai Customs uses the True Market Value principle for such purpose. The principle is in fact the building blocks of the valuation system under the Brussels Definition of Value (BDV) and Article 7 of the General Agreement on Tariff and Trade (GATT). True Market Value of the goods is defined as the wholesale cash price (exclusive of duty in the case of imports), for which goods of the like kind and quality would be sold without loss at the time and place of importation or exportation, as the case may be, without any deduction or abatement. For the vast majority of imports, the CIF invoiced price is accepted; however, in some exceptional cases, the value is established by reference to the maximum prices of the goods of a like kind and quality which have been brought into the country in a previous limited period, generally not more than one month in case raw materials and three months in the case of finished goods.