UL is the abbreviation of Underwriters Laboratories of America. The UL Safety Testing Institute is the most authoritative in the United States and the largest private organization engaged in safety testing and appraisal in the world. It is an independent, profitable professional organization that conducts experiments for public safety. It uses scientific testing methods to study and determine whether various materials, devices, products, equipment, buildings, etc. are harmful to life and property and the degree of harm; to determine, compile and issue corresponding standards and help reduce and prevent life Data on property losses, while conducting fact-finding research business.
The US Federal Communications Commission was established by COMMUNICATIONACT in 1934. It is an independent agency of the US government and is directly responsible to Congress. The FCC coordinates domestic and international communications by controlling radio broadcasting, television, telecommunications, satellites and cables. Many radio application products, communication products, and digital products require FCC approval to enter the US market. The FCC committee investigates and studies the various stages of product safety in order to find the best way to solve the problem. At the same time, the FCC also includes the testing of radio devices and aircraft.