CRUUS is one of the UL classification marks, which refers to the UL mark used in Canada and the United States. It is a safety assurance mark issued by American insurers' laboratories for electromechanical products, including civil appliances. Products exported from the United States or entering the American market must have this logo.

this is a new UL approved part mark, which came into effect on April 1st, 1998. It can be used for parts certified by UL according to both Canadian and American requirements.

Originally, UL did not intend to introduce a combination approval part mark, but introduced this new mark because UL certificate users whose products were sold to Canada and the United States liked the Canadian/American list and grading mark very much.

Extended information:

UL marks are divided into three categories, namely, listing, grading and approval marks. The main components of these marks are UL patterns, and they are all registered trademarks. It is not universal to apply them to different service products.

the fact that a company is approved by UL does not mean that all products of the company are UL products. Only products with UL logo can be considered as products produced under UL tracking inspection service. UL distinguishes UL products by listing, grading and approval marks used on products or related products.

UL's services are not only based on the UL standard in the United States, but also based on the UL safety certification in Canada. there are three types of services: the classification standard for authorized listing. UL stipULates that before January 28, products that have been listed or approved by both UL and CUL can be labeled with both ul and CUL, and after 28, new marks will be used.

Baidu encyclopedia -UL logo