A complete PPT file generally includes: opening animation, PPT cover, preface, table of contents, transition page, chart page, picture page, text page, back cover, ending animation, etc. The materials used are: words, pictures, charts, animations, sounds, movies, etc. The world's leading PPT design companies are: themegallery, poweredtemplates, presentationload, etc. In recent years, the application level of PPT in China has gradually improved, and its application fields have become wider and wider. PPT is becoming an important part of people's work and life, in the fields of work report, enterprise publicity, product promotion, wedding celebration, project bidding, management consulting and so on.