When selling your products into North America, use CSA Group as your agency to obtain product certification. When your products bear the CSA mark, it indicates that they have been tested against applicable standards requirements.
You will find the CSA mark on a variety of products including electrical & electronic products, gas-fired products, plumbing products, personal protective equipment and a wide range of other products.
One mark for North America
The CSA mark shows that your products have been certified by an accredited third party lab and have met applicable standards as required by North American law. When you work with CSA Group you will be working with technical experts that understand the standard requirements.
CSA marks for the U.S.
CSA Group is recognized and accredited in the U.S. by the U.S. Occupational Safety and Health Administration (OSHA), which lists us as a Nationally Recognized Testing Laboratory (NRTL), enabling us to test your products against the U.S. standards written or administered by organizations including the American National Standards Institute (ANSI), Underwriters Laboratories (UL), CSA Group (CSA), NSF International (NSF) and other organizations.
Source:
http://www.csagroup.org/de/en/about-csa-group/certification-marks-labels/north-american-marks-labels