Please suggest me sites which can provide me information on agricultural equipments.?

sure you can see pictures of tractors, etc. on farming websites, what I think you're looking for is a website where people are selling farm equipment. Your best bet is to go to yahoo search and first type in the name of the country, then the words "list sellers farm equipment" then review the list and determine which is closest to you (so you will get a good price since the cost of freight and transportation has risen).