The tenderer issues a tender announcement. According to the relevant information of Li Qing Information Service Center in Xinzhou District, the tender for chef certificate refers to a procurement method in which the tenderer issues a tender announcement, invites qualified chef training institutions or trainers to participate in the tender, and determines the winning bidder according to the evaluation results to provide training services for the chef certificate. Chef's certificate is a kind of professional qualification certificate, which proves that the holder has certain cooking skills and professionalism and can work as a chef in catering enterprises or hotels.