文献资料法是在论文写作过程中通过查阅大量期刊、书籍及文献进行参考，搜集

The documentation method is to consult a large number of journals, books and documents for reference during the writing of the thesis, collect basic theoretical profiles and brief introductions of Hegang Mining Group Co., Ltd., and lay a strong theoretical foundation for the development and demonstration of the thesis ;

The literature method is a reference to a large number of periodicals, books and documents in the process of paper writing, collecting basic theoretical overview and introduction of Hegang Mining Group Co., Ltd., which lays a strong theoretical foundation for the development and demonstration of the thesis.

In the process of paper writing, literature method is to consult a large number of journals, books and literature, collect basic theoretical overview and brief introduction of Hegang Mining Group Co., Ltd., which lays a strong theoretical foundation for the development and demonstration of the paper;