Standard for LED ceiling panel quality checking by eye sight

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The structure for LED ceiling panel is simple, it mainly consists of 3 parts mainly, let's do it one by one.
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Part One. Aluminum body
1.Weight- for aluminum, the more heavy, the more thick the body , the better
2.Material- Aluminum is better than plastic or mix materials

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+ g) j% \, q% D% E; D/ {  g; y3 F# F- cPart Two. LED
1.Brand- There're many brands, Epistar(Taiwan brand) is the most competitive, San'an is best in Chinese brands.
2.Testing by aging equipment is more direct way
3.Brightness- this is complex, <50lm/W and >120lm/W are neither good.  Low lumens means low brightness, >120lm/W maybe high decay=short lifespam.
4.Average of lightoutput- When you look at the light, it is average, but not somewhere dark, somewhere bright.
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! d2 y* B$ y  I2 d8 a/ J4 E8 R/ _Part Three. Driver
1.Components- If you open the cover by screwing,the more components it has, the safer/better.
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; E! j' J! o# l/ i$ h" V2 U2.Appearance, weight, which you can check also.
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: f* G6 r) }+ K& S4 S; I- h" CPainting, light guide panel ,and other components, you can see by eye.
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