US is the abbreviation of the United States, UL certification is some products into the U.S. market must be carried out through the certification.
UL is the U.S. Underwriter Laboratories (Underwriter Laboratories? Inc.) abbreviation. UL Safety Testing Institute is the most authoritative in the United States, but also in the world engaged in the safety of the test and identification of the larger civil institutions. Is an independent, for-profit, for the public **** safety test professional organizations.
UL uses scientific testing methods to determine a variety of materials, devices, products, equipment, buildings, etc. on life, property and the degree of harm; to determine, write, issue the corresponding standards and help reduce and prevent the loss of life and property by the loss of information, and at the same time to carry out fact-finding operations.
UL certification in the U.S. is a non-mandatory certification, mainly product safety testing and certification, the scope of its certification does not include product EMC (electromagnetic compatibility) characteristics.
Expanded Information:
UL certification services:
A. Listing
Generally speaking, the listing applies only to complete products and qualified personnel in the field to replace or install a variety of devices and installations, belonging to the UL listing service of a variety of products, including household appliances, medical equipment, computers, commercial equipment, as well as in the building. The products that fall under UL's listing service include household appliances, medical equipment, computers, business equipment, and all types of electrical products that function in buildings.
Two, recognized
Recognized service is UL services in a project, its identification of products can only be UL listed, graded or other recognized products as components, raw materials used. Recognized products in the structure is not complete, or in the use of certain restrictions to ensure that the expected safety performance.
Three, grading
1, grading services only to evaluate the product's specific hazards, or the implementation of UL standards other than other standards (including internationally recognized standards, such as IEC and ISO standards, etc.) to evaluate the product. In general most graded products are not consumer products, but products used in industry or commerce.
2, UL mark in the classification mark shows that the product by UL identification when there are certain restrictions and regulations. For example, on the industrial use of solvents such as chemicals, only to reach its ignition temperature when the fire may occur this range of evaluation. Certain products are graded and listed services are the same, but generally only on a certain aspect of the product or a number of aspects of the evaluation.
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