UL is US safety certification
1.It is a Non-mandatory certification
2.It Can only be tested by UL company or authorized third party laboratories.
UL application procedure
1.Sign an entrusted agreement, submit the application and relevant company and product information to UL at the same time.
5.Send sample to UL or witness the test
6.Close the case
7.First factory inspection
8.Buy UL tags
9.The applicant is authorized to use the UL mark
10.Routine factory inspection
1.Power Supply (Power Adapter, Switching Power Supply, Linear Power Supply, UPS Power Supply, LED Driver Power Supply, Battery Charger, Computer Power Supply, Transformer, Bare Board Power Supply...)
2.Information (Tablet PC, LCD Monitor, Scanner, Printer, Shredder, Mouse, Keyboard, Glue, etc.)
3. Audiovisual (LCD/LED-TV, Monitor, Video Camera, DVD/VCD, MP4, MID...)
4.Home Appliances (Rice cookers, irons, hair dryers, juicers, toasters, fans, vacuum cleaners...)
5.Lighting (LED-Driver, LED Lamp, Street Lamp, Tube, Decorative Light, Spotlight, etc.)
6.Battery type (Lithium battery, battery pack, charger, charging treasure...)
7.Communication (telephones, fax machines, network equipment, modems, ISDN...)
8. Radio (Wireless mouse, Bluetooth, Walkie-talkie, mobile phone, game console, electric toy, electronic clock, helicopter helmet...)
9.Power Tools (Electric drills, electric screwdrivers, hammers, electric planers...)
10.Parts and accessories (batteries, DC Fan, transformers, keyboards, mice, car batteries, electric car batteries...)
Institute of Electronic and Information Engineering of UESTC in Guangdong.(Hereinafter refered to as IEIE) was established by the Dongguan Government,Guangdongdong Provincial Science and Technology Department and University of Electronic Science and Technology of China on August 17,2017.As a national-level high-tech business incubator,a national-level technology transfer demonstration agency and a national-level maker space,IEIE has built 3 public laboratories,3 academician workstations and 9 research centers in the field of electronic information,undertaking and implementing nearly 200 national and provincial science and technology projects
As an independent third-party product testing and certification laboratory,DDT has A2LA,CNAS qualifications and also obtained recognition of FCC,TUV,UL,Nemko,ITS,CSA and other recognized qualifications authorities.DDT can provide the certification service of more than 70 countries or regions for most types of electrical and electronic products.