There are many different types of UL Marks and they each mean a product has been tested and evaluated. Some UL marks only represent the packaging of the product. The products that are approved and meet the UL requirements are frequently checked in the manufacturing facility so they continue to stay continue to meet the requirements.
Under the UL marks may have more information and access to others world markets.
PGDQ2 — Marking and Labeling Systems – Component
PGGU2 — Marking and Labeling System Materials – Component
PGIS2 — Marking and Labeling Systems, Limited Use – Component
PGJI2 — Printing Materials – Component
CSA labels are the Canadian Standards Association. They perform tests of safety on the products to make sure they meet the requirements.