1. Qualification certificate: PetroChina requires relevant personnel in the bidding business to hold corresponding qualification certificates, such as national registered public tenderers and national registered bidding agents.

2. On-the-job training: In addition to the qualification certificate, China Petroleum also requires the relevant personnel of the bidding business to participate in relevant on-the-job training, be familiar with the bidding business process, policies and regulations, and have high professional quality and professional skills.