LED 5V 0.3W 0.5W 1W 3W UV-C 253.7nm 260nm 270nm 280nm 295nm 311nm Chip, Find Details and Price about 254nm LED 253.7nm LED from LED 5V 0.3W 0.5W 1W 3W UV-C 253.7nm 260nm 270nm 280nm 295nm 311nm Chip - Guangzhou Yingsheng Lighting Co., Ltd.