PDF Reader Pro supports to merge and combine PDFs for better sharing and managing:
1. Go to PDF Documents and choose Local;
2. Click More and choose Merge PDFs;
3. Or go to PDF Tools and tap Merge PDFs;
4. Tick PDF files that you want to combine and tap Merge;
5. Then there will pop a window where you can rename the new file;
6. Click OK and finish to merge files.