The code of each restaurant's food business license is unique. If the food business license is coded in the US Mission, it should be prevented from being forged. The food production license number consists of SC and 14 Arabic numerals. Numbers from left to right are: 3-digit food category code, 2-digit provincial code, 2-digit city code, 2-digit county code, 4-digit sequence code and 1 digit check code.