1, office plus: This is the official website of Microsoft, which integrates PPT templates, Word documents, Excel forms, pictures and other materials. The information inside is free, so you don't need to log in and download it directly.
2, the first PPT: This website updates the latest free PPT template every day, and the navigation classification of the website is also very complete.
3, Beibei material network: a large number, good quality, the material inside is free, no need to log in, download directly.
Hope to adopt