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Examination on Weapons and Equipment Research and Production License is the administrative approval certificate for weapons research and production units from National Defense. It is the premise and guarantee for the supplies of military products. Each unit can be divided into the class-1 and the class-2 license based on the degree of importance of weaponry and special auxiliary products. The class-1, or the class-1 and the class-2 license can be applied to SASTIND. The class-2 license can be applied to defense industry management department in its province, autonomous regions and municipalities.