Create native Excel XLS and XLSX files from scratch and export directly to a PDF file
PHPExcel. It uses PHPExcel library and supports native Excel export, import. We are using it in our project and it does it well.



  The PHPExcel module allows developers to export/import data to/from real Excel files.



Print. It allows you to generate the printer-friendly, PDF, EPUB and Email versions of any node. It supports following libraries:

dompdf
mPDF (only in the 7.x-2.x branch)
TCPDF
wkhtmltopdf



I'd recommend using the dompdf library, since I'm using it an it does the job well.