Legal basis: Article 13 of the Measures for the Supervision and Administration of Food Safety of Online Catering Services, third-party platform providers of online catering services and online catering service providers shall strengthen the food safety training and management of food delivery personnel. Where a food delivery unit is entrusted to deliver food, the food delivery unit shall strengthen the food safety training and management of the food delivery personnel. The retention period of training records shall not be less than two years.