Dirije limyè:
a look at the chip
The chip is the core light-emitting element of the LED lamp, and the luminous efficiency and color rendering index of the lamp beads of different brands and models are different. Most of the lamps on the market are single crystal chips, and integrated chips are also called COB chips, which are more efficient than single crystal chips. Therefore, when purchasing, try to choose COB chips, which not only have a long service life, but also have high luminous efficiency and color rendering index, and are used in a wider range of applications.
Second look at color temperature
Different lighting places, such as bedrooms, living rooms, kitchens and bathrooms, have different lighting needs. At this time, you can look at the color temperature of Led lights to choose. The color temperature range of LED lights is 27006500K, the smaller the value is, the more yellow light is, and the other is blue and white light. The suitable color temperature range of LED lighting should be close to the color temperature range of the natural white light of the sun. It is a scientific choice. For daily household lighting, you can choose 2700K incandescent color or 5000K neutral white; Lights with high color temperature are close to the dazzling sunlight at noon, which is too irritating to the eyes, while low color temperature is prone to fatigue. Only lights with comfortable color temperature are healthy lights.
Three look at the luminous flux
Luminous flux generally refers to brightness. Different environments and different areas require different light. Under the same number of pings, the number of bulbs used varies according to different environments. When purchasing, you can consult the shopping guide according to your space needs. When choosing lamps and lanterns, it is necessary to consider the lighting environment, refer to the luminous flux index of the product, or pay attention to the brightness of the light, and try to choose lamps with sufficient brightness but not dazzling. 
Four look at the color rendering index
Looking at the color rendering index is to see the true degree of the color of the object under the light. The value is generally 0-100. Now the color rendering standard of LED bulbs is greater than 75. It is recommended to choose 80 or more.
5. Perform strobe test
It is recommended to check whether the LED lamps you buy are flickering, and the flickering lamps will affect your eyesight. Strobe is a problem that is difficult to detect with the naked eye. You can use your mobile phone to take a photo at the light. If there are gray and white "stripes" in the photo, it means there is stroboscopic. If there is no "stripe", it means that there is no stroboscopic.