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Through the experiment, to see the decline of light and brightness .Five steps:
a. Flux.
b. Lumen.
c. Chromatic aberration.
d. Production process.
e. Quality assurance.
Test white light:
a, different chips. b, exactly the same bracket. c, exactly the same phosphor.d, exactly the same proportion.e, aging in the same timef, at the same time test.
Above can identify it!
