Can I use facts from surveys which are done by others and are available on internet?
From my perspective, there is nothing wrong with using results of surveys in you text. In many cases, this can help your argumentation and give the reader the idea of the state of the art. And in deed, surveys are used in research papers or other publications as a source of argumentation. Survey papers have their place in academia.
This is one papers using survey in the introduction:

Small and Medium Size Enterprises (SME) are the most common employers across the world. In 48 out of 76 nations covered in Ayyagari, Beck and Demirgüç-Kunt (2007), SMEs employed more than 50% of the formal workforce

What have we learned from the Enterprise Surveys regarding access to
finance by SMEs?,Kuntchev V.,Ramalho R., Rodríguez-Meza J.,Yang J. S.,2012

This is THE TECH WRITER’S SURVIVAL GUIDE written by Janet Van Wicklen who uses surveys many times:

A 1999 survey by the Society for Technical Communication (STC) found
that 95 percent of its membership had a bachelor’s degree or higher1.

with references after every chapter:

1STC 1999 Technical Communicator Salary Survey (Arlington, Virginia: Society for Technical Communication, 1999)


Anyway, before you will use the information you should check:

reliability of the source - you do not want to include results from a company which is considered to be unprofessional and discredit your research
sufficient statistic sample - surveys which say: 9 from 10 asked doctors recommend using alcohol as a medicament against cough will not help your credibility
check the survey closely to avoid some misinterpreting

And you should:

include appropriate citation
be careful when interpreting the results
NOT to change numbers : )

If you are interested, you can take a look at more surveys and related papers at Enterprise Surveys