Can you tell me how to judge the quality of LED projector?
3, packaging: refer to the light packaging quality evaluation criteria4, marking: refer to lamps labeling quality evaluation criteria5, appearance: refer to the appearance quality evaluation criteria of lamps and lanterns
2 、 electrical testHigh voltage test according to GB7000 requirement test, qualifiedThe grounding test shall be tested according to the GB7000 requirementNo light is shiningThe spot has no overlap and so on. The light is even and soft
LED washing wall lamp quality is good or bad, Crystal Valley lighting recommend you can refer to the following points to judge, thank you!1, structure and function? connect the box with the left and right side cover flat, the gap between the two is not greater than 0.6mm? the box and the track are well assembled. The spacing of the conductive plate meets the requirements and is in good contact with the track conductive strip? electric box and rail installation; plastic and conductive sheets without scratch and deformation; and normal conduction.? pull up the U frame positioning slider, the lamp body can rotate around the U frame up and down 90 degrees. After positioning, pull down the positioning slider, the lamp can stay in any position, and the positioning is accurate and firmThree - oblique cylinder by clip is fixed on the lamp tube mouth, compact and firm.? silicon sleeve shall not be out of the hollow pill, the net cover of the back net is stuck to the silicon sleeve and the outlet, so as to effectively prevent pulling
