ultra violet uv leds bicolor dual wavelegnth chips UVC+A 275nm(270nm-280nm)+395nm(390nm-400nm) 3535 SMD UVC+UVA LED Chip

ultra violet uv leds bicolor dual wavelegnth chips UVC+A 275nm(270nm-280nm)+395nm(390nm-400nm) 3535 SMD UVC+UVA LED Chip