Web scraping

Need experienced programmer to develop BOT that will gather commercial real estate listings from all the commercial real estate sites in America. Need to be able to take those findings and run them against an existing database. Came across your name because Jingguo Quan provided this link (https://www.freelancer.com/jobs/HTML.1/Webscraping-Data-Collection/ ) as part of his job history. Please explain your connection to Jinggua Quan. Do you work for him? Are you with the same company? I am hoping to crawl through the internet and find listings carried on every commercial real estate site in the country (and only in America). I then want to do two things... 1. Run them against our current database and eliminate duplicates 2. Ideally, organize them by size, price per foot, etc. Can you do this?