A multilingual website is any website that offers content in more than one language. And Opencart does support it, where you can add/translate all your product descriptions and launch your website in as many languages as possible to cover more potential buyers.

But when it comes to submit your products to google sitemap feed you can submit it from opencart generated Google sitemap feed ONLY in main language. What leaves your none English pages not submitted to google at all. So other languages will not get indexed to google and non English potential buyers simply will not see your products.

This module will change it , it does allow you as admin to generate as many google sitemap feeds as many languages you have installed on your website.

This is a must to have extension for shop owners who wants a better search results and SEO.

Simply go to extensions => feeds and get all google feeds by language and submit it to google:)