Try to use limit value as "50, 100".
http://pf.tradetracker.net/?aid=1&type=xml&encoding=utf-8&fid=251713&categoryType=2&additionalType=2&limit=50, 100
It will start record from 100 and limit to 50. So you can show record as per your requirement by using ajax call. It will not fetch all record at once.