This is very simple, you can create a new PPT, the first page of the design of your template, after making, copy and paste it. Company name in the upper right corner as an example:
1, insert a text box, as shown:
2, enter your company name in the text box, here to "Baidu know" instead of
3, according to their own needs to adjust the color of the font, size and location
4, then Copy this page of the slide on it, each page of the company name is not changed.