Welcome to WmW.
My first comment would be is that you shouldn't eliminate the product info from your corporate site. If your original pages are text based and they have the potential to rank well, you would be better off reformating them so someone landing on them could simply click through to the third party provider to make a purchase.
If, for some reason that's not an option, then you will probably need to do more than just send them some meta tags. (You can find several other threads in this forum that discuss the limited value of meta tags).
Along with having to deal with the copy being presented in graphic format, you might also have problems with the outsourced catalog being dynamic, which will prevent most spiders from crawling it.
Another downside to removing the content from your site is the fact that you loose the potential popularity benefit of inbound links and directory listings. If your company sells "blue fuzzy widgets" and you are listed in ODP, Looksmart, and Yahoo in categories related to blue fuzzy widgets, your product pages will rank better from your own domain.
All in all, you'd probably be better off if you focus on converting your product pages into content rich information pages and use them as the cornerstone of your SEO strategy.