You could look for the results that the SEO company has done for their clients, they have helped in the performance of this clients website in s. If they don't in order to give, the idea is best that you bring them out from your own list of possible SEO companies. https://www.digitaljournal.com/pr/news/press-advantage/alpha-therapeutics-shares-their-top-rated-products-including-extra-strength-3000mg-cbd