China Petrochemical, China MCC and SAIC.

1. China Petrochemical: As one of the largest petroleum and chemical enterprises in China, China Petrochemical has obvious advantages in the field of hydrogen energy. The company not only has rich experience in the production and supply of hydrogen energy, but also actively promotes the research and development and application of hydrogen energy technology. Its revenue scale is huge and it has a complete layout in the hydrogen energy industry chain.

2. China MCC: As a leading enterprise in metallurgical engineering, equipment manufacturing and other fields, China MCC has also performed well in the field of hydrogen energy. The company is committed to the research and development and application of hydrogen energy technology, and has made remarkable achievements in the construction and operation of hydrogen energy projects.

3. SAIC: As one of the major automobile manufacturers in China, SAIC actively embraces new energy technologies, including hydrogen energy. The company has made great progress in the research, development and production of hydrogen fuel cell vehicles, and contributed to the application of hydrogen energy in the transportation field.