Hi sir,
I read your project about React Native app add function view DOC and PDF on app. I'm very interested in doing your project.
I have 4 years work with React, React Native (3 years).
I can make your app can view those file type pdf, png, jpg, xls, doc, ppt, xlsx, docx, pptx.
Please contact more so we can discuss about your requirements and price more detail.
Thank you.