Does my site is punished by google?

I don’t do anything about my site. but these months the google SERP(site:mysite domain) of my site are reducing. some months ago. our site can have a few orders every other week.but now. even passed 2 or 3 moths. there is no any order of my site. why? <snip/>
someone will give me some tips will be very very appreciated.

This type of question has been asked and answered many, many times before. Please read the SEO FAQ or use the [url=http://www.sitepoint.com/forums/search.php]Search facility to find past discussions.

If, after reading those, you’ve still got any specific questions that haven’t been answered, please do come back and start a new thread. In the meantime, I’m closing this one.