One, monochromatic light source, chromatography is too narrow, on the eye of the optic nerve will have an impact, easy to fatigue
Second, the price is more expensive, relative to other light sources, the price is generally higher.
3. LED lamps have a low threshold for entry, which also includes some unqualified products. There is also a lack of relevant quality inspection means in China, mainly based on the quality inspection of foreign developed countries.
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