I have extensive experience in website coding, and believe I can solve your problem for you. In order to read items from another catalogue and include these on your website, I will need to know which catalogue you would like to read from, as well as whether this will be scraped from the web or through an external API. Please also send me a link to your current site so I can see where the new products will be displayed. Send me a message and we can discuss the project details further :)