In North America, many municipalities, states and provinces have laws, codes or regulations that require certain products to be tested to a specific standard or group of standards by a nationally recognized testing laboratory (NRTL). However, the laws do not specify which NRTL a manufacturer must use, or which product certification mark must appear on the product.
Many manufacturers choose CSA International as their NRTL and the CSA Mark for their products because they value our service, international reputation, and long history.