The evaluation criteria for PetroChina’s Grade A suppliers are as follows:

1. Enterprise qualifications: Comply with national laws and regulations, meet the conditions for legal qualifications and normal operations. The registered capital of Grade A suppliers should reach the prescribed minimum amount, and the industrial and commercial business license and other certificates should be complete and valid.

2. Quality assurance: We have a modern quality management system, the production process is strictly controlled, the products comply with national technical standards, have stable performance, and strictly implement the product quality assurance system.

3. Supply capability: Have reliable supply capabilities and resources, provide timely, accurate and complete supplies, closely cooperate with the company's production plan, and implement supply in compliance with delivery deadlines and contract regulations.

4. Price advantage: It has a reasonable price level and provides a competitive price advantage for PetroChina on the premise of quality assurance.

5. Service level: The service is comprehensive, timely, enthusiastic, thoughtful and high-quality, and can provide professional services and technical support according to the needs of PetroChina.

The above are the basic standards for the evaluation of PetroChina’s Grade A suppliers. If a company can strictly meet these standards, it is expected to become a Grade A supplier of PetroChina. PetroChina focuses on long-term cooperative relationships with high-quality suppliers. Therefore, as long as the company can continuously improve its comprehensive strength and service level, it will have the opportunity to obtain more business opportunities and partnership opportunities.