A, UL certification
UL is the United States Underwriters Laboratories (Underwriter Laboratories Inc.) abbreviation. UL safety test is the United States the most authoritative, but also in the world engaged in safety testing and identification of the larger civil institutions. It is an independent, for-profit, for the public **** safety test professional organizations. It uses scientific testing methods to determine the study of various 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, as well as to carry out factual research business. UL certification in the U.S. belongs to the non-compulsory certification, mainly product safety performance testing and certification, the scope of its certification does not include product EPA certification. The scope of certification does not include the EMC (electromagnetic compatibility) characteristics of the product.
In short, it is mainly engaged in product safety certification and business safety certification business, its ultimate goal is to get for the market with a considerable level of security of goods, to ensure the safety of personal health and property to contribute. Product safety certification as an effective means of eliminating technical barriers to international trade, UL to promote the development of international trade also plays a positive role.
Two services
1, listing (LISTED)
Generally speaking, the listing applies only to the complete product and qualified personnel on-site replacement or installation of a variety of devices and installations, belonging to the UL listing services for a variety of products, including household appliances, medical equipment, computers, commercial equipment, computers, commercial equipment, and all types of electrical products that function in buildings. These products include household appliances, medical equipment, computers, commercial equipment, and all types of electrical products that function in buildings, such as power distribution systems, fuses, wires, switches, and other electrical components. UL-listed products, usually can be marked on each product UL's listing mark and the use of the listing mark.
2, recognition (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. Recognized products are not structurally complete or have certain limitations on their use to ensure that the desired safety performance is achieved. In most cases, the tracking of Recognized Products falls into Category R. Approved products that fall into category L are electronic wire (AVLV2), processed wire (ZKLU2), wire harnesses (ZPFW2), aluminum wire (DVVR2), and metal flex tubing (DXUZ2). Approved products are required to bear the approval mark.
3. Classification
The Classification service evaluates products for specific hazards only, or evaluates products that implement standards other than UL standards, including internationally recognized standards such as IEC and ISO standards. Generally speaking, most of the graded products are not consumer products, but industrial or commercial use of the product. UL mark in the graded mark indicates that the product in the UL identification by certain limitations and regulations of the scope. For example, chemicals such as solvents used in industry are evaluated only to the extent that they are likely to catch fire when they reach their ignition temperatures. Certain product classification services and listing services, but generally only a certain aspect of the product or a number of aspects of the evaluation, such as in the United States, medical X-ray diagnostic equipment to comply with U.S. laws and regulations relating to radiation emission and beam accuracy, but because UL only X-ray as a classification of products, so only the evaluation of its mechanical properties, electrical properties, and other non-radiation properties of these aspects.
4. Multiple Listing, Multiple Recognition or Multiple Classification Services
When a UL applicant, after obtaining the above listing, recognition or classification services, its products are to be manufactured under the name of another company to meet the needs of sales, it may apply for multiple listing, multiple recognition or multiple classification services, in which case the manufacturer who has been listed, recognized or classified is allowed to use another company's name in the product directory, provided that the product is identical to the original listed, recognized, or classified product except for the company designator, product designator, or other characteristics deemed acceptable by UL.
5, "AL" listing, recognition or classification services
If the UL applicant does not want to use his own company's name to obtain listing, recognition or classification services, he can apply for another firm (usually a retailer or wholesaler) in the name of the application for listing, recognition or classification, that is, "AL" listing, recognition or classification services. This is distinguished from multiple listing, multiple endorsement or multiple grading services by the fact that the applicant is not a listed person.
6, system certification services
As a member of the International Accreditation Committee, UL is widely involved in ISO9000 quality system certification, ISO14000 environmental protection certification, QS9000 automotive industry quality system certification and AS9000 aircraft industry quality system certification services. There are 116 factories in China*** that have obtained UL's system certification; 21 of them are ISO9001 certified, 85 are ISO9002 certified, 1 is ISO14001 certified and 9 are QS9000 certified.
7, UL's other services
such as certification services, inspection services, factual judgment services, research services.