The premise of international conference papers being retrieved by EI is that the conference is recognized by EI and belongs to the engineering international conference. This kind of conference papers will be published in the form of papers, and then sent to EI database for retrieval.

However, please note that not all papers of international conferences will be retrieved by EI, and not all papers retrieved by EI are international conferences. Attention should be paid to the level of the conference and the academic quality of the paper when submitting the manuscript.