1, look at the overall "power factor" lamp: low power factor, and illustrate the use of the driving power supply, circuit design is not good, will reduce the service life of the lamp greatly, the power factor is low, the use of good lamp will not long lamp life.

2, "material structure, heat dissipation conditions: LED heat dissipation is also very important, the same lamp power factor and with the quality of the lamp, if the heat condition is not good, light work under high temperature, light will be great, will reduce the life of lamps.

3, "light quality: quality depends on the quality of the chip and chip package technology.

4, look at the driving power of lamp, the other part of the life of the power supply is relatively light, life is very short, the power of the lamp life influence overall life, theory of life improved in 5-10 million hours, and the life of the power supply in the 0.2-3 million hours, design and material selection of power supply will determine the service life of power supply.

5, look at the light bulb power efficiency: the same light effect, higher brightness, higher brightness, lighting the same power consumption, smaller, more energy saving.

6, power supply efficiency, power efficiency is good, the higher power consumption, that itself is small, the output power is greater.

7, is to see whether it meets the safety standards? China LED lighting safety standards have been introduced, according to the national standard of safety selection LED lamps.

8, is to see whether the fine workmanship.