The DEMO version only includes 4 pages:
http://pstc.com.np
http://pstc.com.np/about.html
http://pstc.com.np/product.html
http://pstc.com.np/contact.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit http://www.waybackmachinedownloads.com to buy a fully functioning site.
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