article 22 of the measures for the administration of food circulation licenses shall be valid for 3 years. Where a food business operator needs to extend the validity period of a food circulation license, he shall apply to the original licensing authority 31 days before the expiration of the validity period of the food circulation license and renew the food circulation license. If the license is renewed, the serial number of the renewed Food Circulation License will remain unchanged, but the year of issuance will be filled in according to the actual situation, and the validity period will be recalculated. On June 1, 2119, the Food Safety Law stopped issuing hygiene licenses and was replaced by "catering service license", "food circulation license" and "food production license".