LED panel light has more components then other led lights, for other led lights, it not only check the quality from the led chips, shell material, lens material and driver material(for these quality check method,please read here, it also have the LGP and diffuser plate which are very important. There are some panel light, after installation or lighting few days , it has some dark spot on the panel, or the panel out of shape.
All this happen, because of the diffuser plate material. If you want find a good led panel light manufacturer in China, you must know the diffuser material difference, which are highly decide a led panel light quality and cost.
Diffusion plate in the use of LED panel light mainly play a role in blocking sundries and guide plate Mesh Points, We have test and research all the diffuser plate in the market which include PC,PMMA,PS and PP. Below is the research results.
Pc-polycarbonate
Advantages:1. High strength and elastic coefficient, high impact strength, wide temperature range, 2, high transparency and Free Dyeing; 3, High H. D. T. (Heat Deformation Temperature means that under the outer pressure, the plastic deformation temperature .） 4. Good Fatigue Resistance; 5. Good weatherability (weatherability means the material is steady, not easy discoloration, Turtle,) 6 odorless is safe for human health; 7. It has a low shrinkage rate and good dimensional stability. The stability of the PC is the best, High level of fire protection (UL94-V0). It’s easier to authenticate safety test. But in the production and sales,
The price of a PC is more expensive, And there’s too much static in the installation, cause it is easy to absorb dust during assembling. it is high labor cost. Besides, it is 86% light transmittance is very low for the panel light . Because LED panel light lights emit after LGP and diffuser , the diffuser transparency rate decide the lighting efficiency.
