Look at your question, it should belong to the analysis report of paper listed companies. I suggest you choose the industry first, then the product, then the company, and make a positive analysis. For example, in the offshore equipment industry, the main domestic listed companies include:

1. Shipbuilding: China Ship (600 150), CSSC (600072), GSI (600685);

2. Offshore oil and gas development: Offshore Oil Engineering (600583), China Ship (600 150), China Heavy Industry (60 1989), CIMC (000039);

3. Listed companies in offshore platform manufacturing include Zhenhua Heavy Industry (600320) and Guangzhou Shipyard International (600685);

4. Oil and gas exploitation services: cosl (601808);

5. Equipment design contractors: Shanghai Jiahao (300008), Jiang Zuan (000852) and Jerry (002353);

6. Offshore oil helicopter service: CITIC Haizhi (000099);

7. Comprehensive logging instrument, oil and gas production tree and oil product analyzer: Shen Kai Co., Ltd. (002278);

etc ...........................

As for the data you mentioned, the listed companies on China Main Board and Growth Enterprise Market have good financial data. You can check it in the stock column of Sina Finance (other columns are also available), and you can also check the annual reports of the above companies.