standard international trade classification's standard international trade classification dates back to the first half of the 2th century. In 192, the League of Nations was founded, and it started to work out the international trade terminology and commodity statistical catalogue. In 193s, it published the Draft Tariff Terminology, and on the basis of this draft, it was revised into the Compendium of International Trade Statistics Commodity Catalogue used by all member countries.
After the Second World War, 51 countries founded the United Nations. In order to make statistics and analysis of world trade, the United Nations Statistical Commission further revised the above-mentioned compendium of commodity catalogues, and completed the standard international trade classification in 195. The standard * * * is divided into 1 categories, 5 major categories, 15 medium categories and 57 fine categories. As the same basis for international institutions to make trade statistics reports and systematically analyze world trade. This standard was recommended by the Economic and Social Council of the United Nations in 1951 and used by all member countries. Since the promulgation and implementation of standard international trade classification in 1951, it has been revised several times. Except for the category framework, other categories have also expanded with the increase of levels.
SITC adopts economic classification standard, that is, it classifies raw materials, semi-finished products and finished products and reflects the industrial sector source and processing degree of commodities. The standard catalogue is represented by five digits, with the first digit representing the category, the first two digits representing the chapter, the first three digits representing the group and the first four digits representing the grouping. At present, the United Nations has published SITC(Rev.4). However, SITC is seldom used in China. ?