UL is short for American Underwriter Laboratories Inc.. UL is America's most authoritative, and also the largest engaged in security testing and identification of civil society institutions in the world. It is an independent, non-profit, do testing for public safety professional organizations. It uses scientific methods to study the test to determine the extent of a variety of materials, devices, products, equipment, construction of life, property and whether the harm; determining, write, issue the appropriate standards and help reduce and prevent life loss of property information, while carrying out the facts research business.
About UL
safety certification and operational safety proof products business, the ultimate aim is for the market to get the goods with a considerable level of safety, guaranteed to personal health and property safety to contribute. Product safety certification as an effective means to eliminate technical barriers to international trade in terms of, UL to promote the development of international trade also played an active role.
phase of UL fire insurance sector by maintaining the action until 1916, UL was completely self-supporting. After nearly a century of development, UL has become a world-known certification body, which itself has a set of strict organization and management system, standards development and product certification programs. UL made a council to manage security experts, government officials, consumers, education, utilities, insurance and standards department composed of representatives of the daily work of the president, vice president of process. Currently, UL has five laboratories in the United States, headquartered in Northbrook town north of Chicago, while the corresponding laboratory set up in Taiwan and Hong Kong. In the US, for consumers, UL is a symbol of safety signs, global, UL is one of the most trusted manufacturers conformity assessment provider.
About UL Marks
UL logo template
UL mark is usually identified in the product (or) products and packaging to indicate that the product has passed UL certified to meet safety standards.
These mark the most important part of the pattern is UL symbols, these symbols are registered trademarks of UL.
UL mark requirements
1.The registered trademark of the minimum height should be 3/64 inch.
2.When the UL mark the outer diameter is less than 3/8 inch, the registered trademark symbol if is without clear and readable by the naked eye ,can be ignored.
3.The mark can be available by stamping, molding, printing ink, screen printing or the like directly and fixed on the same product.
4.Receive the mark: manufacturer may be reproduced or authorized dealer to obtain from UL.
5.ULus logo(only have us,without c):Products into the US market safety symbol；cUL(only have c,but no us):Products into the CA market safety symbol；cULus logo:Products into both US and CA markets safety symbol
Services contents
the type of UL product certification, test services can be divided into the listed, recognition and classification.
1. LISTED:
In general, the listed only applies to the complete product and a variety of devices and devices qualified personnel in the field to be replaced or installed, the UL listed and services a variety of products including: household appliances, medical equipment, computers, business equipment as well as the role in the building of all kinds of electrical products, such as power distribution systems, fuses, wires, switches and other electrical components and so on. By UL listed products, usually marked with the UL Listing Mark on each product. Listing Mark usage.
2. Recognized:
recognition service is one of UL service project, and its products can only be identified between the UL Listing and Classification or as components of other approved products, raw materials use. Approved products in the structure is not complete, or there are certain restrictions on the use to ensure the expected safety performance. In most cases, the approved products tracking service belong to the class R. Belongs to the class L recognition products are electronic line (AVLV2), processing wire (ZKLU2), harness (ZPFW2), aluminum (DVVR2), and metal flexible tube (DXUZ2). Accreditation requirements with product approval mark.
3. Classification:
Classification services only for product-specific hazard evaluation, or for other than the implementation of other standards UL standards (including internationally recognized standards, such as IEC and ISO standards, etc.) for the product were evaluated. In general most of the products are not consumer level products, but the use of industrial or commercial product. UL logo in hierarchical flag indicates that the product identified by UL when there are certain restrictions and a predetermined range. For example on the use of industrial chemicals such as solvents, fire only when the range reaches its ignition temperature may occur evaluated. Grade service and same column name for certain products and services, but generally only for one aspect or several aspects of the product evaluation, as in the United States, this type of medical X-ray diagnostic equipment to the country to comply with US law and the relevant radiation emission and beam provisions of flow accuracy, but because only the X-ray as UL classified product, so only evaluate its mechanical properties, electrical properties and other non-radiation properties of these aspects.
4.Multi-listed, multi-recognized or multi-classification
applicant after a UL acquires the listed, recognized or classification, and its products to be in the name of another company's production to meet the needs of sales, can apply Multi-listed, multi-recognized or multi-classification services, in which under case, get the listed, accredited or manufacturer classification are allowed to use the product directory in another company's name, but the product in addition to the company code, product code or UL company considers acceptable to other characteristics, must be original listed, product approval or grading consistency.
5.listed, recognized, classification services
If the applicant does not intend to obtain UL Listed in the name of their company, approval or grading service, he could apply with another firm (usually a retailer or wholesaler) to apply on behalf of a listed, recognition or classification, the "AL" listed, approval or grading service. Multiple listed, muti-recognize, multi-classification the difference between the applicant is not in its celebrity column.
6.System certification services:
As a member of the International Accreditation Committee, UL widely involved ISO9000 quality system certification, ISO14000 environmental certification, QS9000 automotive industry quality system certification and AS9000 aircraft industry quality system certification services. A total of 116 domestic factories achieved UL certification system; where 21 is ISO9001 certification, 85 for the ISO9002 certification, a certification of ISO14001, nine of QS9000 certification.