The third-party grading services CGC, CGC Trading Cards, and Certified Sports Guaranty (CSG) have appointed Grosnor Distribution Inc. as their first Official Submission Center in Canada. This means Grosnor will help Canadian customers submit their comics, trading cards, and sports cards to the three services for authentication, grading, and slabbing.

Grosnor is a game and trading card distributor located in Brampton, Ontario, where it has a 50,000 square foot warehouse with a retail showroom.CGC is a third-party grading service for comics, and CGC Trading Cards is a new division of the company that just began accepting submissions in 2020. In 2021, they expanded these grading services to include more TCG lines (see "CGC Trading Cards").