UL是英文保险商试验所（ Underwriter Laboratories Inc. ）的简写。" c="UL is an English Underwriters Laboratories (by Underwriter Laboratories Inc.) shorthand. " b="UL 是英文保险商试验所（ Underwriter Laboratories Inc. ）的简写。">UL is an English Underwriters Laboratories (by Underwriter Laboratories Inc.) shorthand. UL safety test is America's most authoritative, is the boundary of large private institutions engaged in security testing and identification. She is also a product safety standard the founders. More than a century of years, UL has hundreds of products and components relevant safety standard test and assess their management systems for consumers in the United States, UL is a symbol of safety signs in accordance with international standards. Global, UL is the manufacturer of the most trusted conformity assessment to provide one.
UL approved type of
UL product certification, test the types of services can be divided into recognition, column names and classification.
1) recognition (Recognized): Authorised Service is a project of the UL service, their product can only be identified as UL Listed, grading, or other approved products, components, raw materials use. Authorized products in the structure is incomplete in certain restrictions on the use to ensure that achieve the desired safety performance. In most cases recognized product tracking services belong to the R class. The listed products belonging to the class L E-line (AVLV2), processing wire (ZKLU2) harness (ZPFW2) aluminum (DVVR2), and metal flexible tube (DXUZ2). Approved product requirements with the approval marks.
2) The column names (LISTED): In general, the column name only applies to complete products as well as qualified personnel to replace or install a variety of devices and devices in the field, are UL Listed service a variety of products including: home appliances all kinds of electrical products, medical equipment, computers, business equipment and in buildings, such as distribution systems, fuses, wires, switches and other electrical components. UL Listed products can usually be on each product marked the UL Listing Mark. Column name logo usage.
3) classification (Classification): grading services only product-specific hazard assessment, or evaluation of the implementation of the UL standards other than standards (including the internationally recognized standards such as IEC and ISO standards), products. In general, the majority of graded products are not consumer products, but industrial or commercial products. Classification Mark UL mark that certain restrictions and regulations range of products identified by UL. Industrial use of solvents such as chemicals, for example, only its reach to the range of fire that may occur when the ignition temperature evaluation. The classification of certain products and column names the same service, but generally only to evaluate a product or a number of aspects, such as in the United States, medical X-ray diagnostic apparatus such equipment to the country to comply with U.S. law and the radiated emission and the provisions of the beam accuracy, but the UL X-rays as a graded product, so only the evaluation of its mechanical properties, electrical properties and other non-radiation performance.
4) "AL" column name, recognition or grading service: UL applicant is not the name of their company to get column names, recognition or grading service, he can apply for another firm (usually a retailer or wholesaler) in the name of the column name, recognition or classification, that is, "AL" column name, recognition or grading service. With multiple columns, multiple recognition or multi-tiered services, the difference between its applicants is not a column celebrity.
5) multiple columns, multiple recognition or multi-tiered services: When a UL applicant to obtain the column names, recognition or grading service, and its products to another company in the name of the production to meet sales needs. Multiple column names can apply for multiple recognized or multi-tiered services, in this case, the column name, the manufacturer of the approval or classification are allowed to use another company's name in the product directory, but the product in addition to company code , product code or UL that other features can be accepted, must be consistent with the original column name recognition or classification of production products. |
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