1, look at the appearance of LED ceiling lamp, check whether the appearance of flaws, sealing is intact, whether the phenomenon of light leakage.
2, to see the lamp cover material, and now the LED ceiling lamps are generally used acrylic cover, rarely use glass, acrylic mask light transmission strong, and not like glass shade so fragile, more light and safe.
3, see the LED ceiling lamp lamp beads, lamp beads is the core of the ceiling, there are domestic lamp beads, but also Taiwan's imports and foreign imports of light beads, domestic cheap, but the quality is not how, some LED lights Manufacturers in order to save costs and reduce the price of LED lights, the use of domestic lamp beads, which certainly can not guarantee the quality of Taiwan's imports of light beads relative to domestic lamp beads to be expensive, but the quality can be guaranteed, the price is relatively more cost-effective. Foreign imports of light beads better quality, but the price is higher, depending on the customer's choice. So customers in the choice of LED lamps, can not just look at the price, should be from the overall cost-effective choice.
4, look at the LED ceiling lamp chassis, the chassis is best to choose the alloy chassis, heat dissipation is good, and corrosion resistance.
You can ask the business and a problem to solve!
First, whether to warranty two to three years;
Second, the annual light failure is less than 5%;
Third, whether the color rendering index is above 85;
Fourth, whether it is patch light beads;
Fifth, the luminous efficiency can be done 90 lumens per watt;
Sixth, whether the light angle is 180 degrees;
Seventh, the most direct way, good ceiling, basically 10 dollars per watt.