... ,20s,30s.5,Induction of automatic open Yes,put hand in lamp,the light open.6,Using life/35000hours.7,Solidification timeUsing LED ... time is 30s. Using LED method of three-in-one gel, the solidification time is 20s.8,AuthenticationCE.9,Examination formQC.10 ... also troubles to recycle, when it is broken. However, the LED nail UV lamp makes use of LED which is semiconductor luminescent device ...