UL is the abbreviation for Underwriters Laboratories Inc. UL Safety Testing Institute is the most authoritative in the United States, but also in the world engaged in safety testing and accreditation of the larger private institutions. It is an independent, non-profit, for the public **** safety test professional organizations.
It 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 caused by the information, and at the same time to carry out fact-finding operations.
UL was founded in 1894, the initial stage of UL mainly rely on the fire insurance department to provide funds to maintain the action, until 1916, UL is completely independent, after nearly a century of development, UL has become a world-renowned certification body, the wife of a set of strict organizational and management system, standards development and product certification procedures.
Development
UL was founded in 1894, after more than a century of development, UL has become one of the world's leading testing and certification bodies, with its own set of organizational management system, standards development and product certification procedures. UL is headquartered in the town of Northbrook in the north of Chicago, and at the same time in Suzhou UL is headquartered in Northbrook, Chicago, and has laboratories in Suzhou, Guangzhou, Dongguan, Shanghai, Shenzhen, Hong Kong and Taiwan.
Certification Marks
1, UL Listing Mark
Mainly used in the consumer can be purchased directly from the market of the general end-products, such as home appliances, computers, heaters, fuses, power supply boards, smoke detectors, fire extinguishers and other products. Any product bearing the UL Listing Mark indicates that a representative sample of the product complies with the relevant UL safety standard. This series of Marks includes the U.S., Canadian and U.S.-Canada Marks.
2, UL classification mark
When the product has a specific hazard, specific properties, limited or special conditions of use, and even for the regulation of the product, that is, the need to use UL classification mark. The classification mark involves one or more of the following requirements: specific risks, such as injury or death, fire, etc.; performance under specific conditions; specific code requirements; specific standards, etc.. Common products include fire doors, fire hydrants, medical devices, ice machines, etc. This series of marks includes the U.S., Canada and U.S.-Canada marks.
3, UL Recognized Component Mark
Mainly used in the finished product assembly plant or other components used in the factory parts products, such as plastics, capacitors, printed circuit boards, complex high-tech parts and industrial control parts. UL parts certification through an objective method to prove that the parts comply with the applicable regulatory requirements. This enables component suppliers to create added value by helping to shorten time-to-market for products using UL Recognized Components.