LED is the abbreviation of English light emitting diode. Its basic structure is an electroluminescent semiconductor chip, which is solidified on the bracket with silver glue or white glue, and then the chip and the circuit board are connected with silver wire or gold wire, and then the periphery is seaLED with epoxy resin to protect the internal core wire. Finally, the shell is installed, so the LED lamp has good seismic performance. The application field involves mobile phones, desk lamps, household appliances and other daily household appliances and mechanical production.