To see 3D PDF files in Chrome
Your Chrome settings may open PDF files within Chrome which will prevent proper 3D rotation of my 3D files.
To change Chrome PDF setting, open Chrome and type in "chrome://settings/content" got to PDF section and switch off.
You may be asked if you want PDF files to open in Adobe acrobat - click yes.
Alternatively, download the PDF file and open in the Adobe Acrobat Reader