How to choose the keyword?

I have a site online,it's a electronic wholesale shop,i have a problem about which keyword shoul i write in the meta keyword,for example, mp4 player, if i write mp4 players, China mp4 player,wholesale mp4 player,is it too parochialism?
Anyone can give me some advice?
Thanks.

 

you can used keyword selector tools for it such as Google AdWords and WordTracker Keyword Tool and find keyword which have high search volume and low competition.

 

use more tool at www goodkeywords com

 

thanks for the good information!

 

you could try keyword elite

 

traffictravis dot com is the best out there , its free version gives you upto 200 results for a given keyword , daily searches in google , msn , yahoo .... it shows your competition and their present and past running adwords ads with all the keywords price they bid on.. you can save the keywords in the free version but cant export the competition sites data and adwords data.. Hope this helps

 

Avoid using repeated words. Try to put different variation of keywords on your meta.