... 10s-30 12 watts LED nail gel curing uv lamp & LED nail gel dryer machineis easy to take, ... to the environment, especially harm to human body. Lamp of UV tube also troubles to recycle, when it ... is broken. However, the LED nail UV lamp makes use of LED which is semiconductor luminescent device. ... general, some even go beyond 80°C, once someone touch the tube, they will be scald. However, LED ...