LED ceiling lamps generally have a diameter of about 200mm and are suitable for use in aisles and bathrooms, while those with a diameter of 400mm are suitable for installation at the top of a room with a diameter of not less than 16m2. There are two common types of LED ceiling lamps on the market: D-shaped tube and annular tube, as well as the difference between large and small tubes.

When buying LED ceiling lights, you should look at three things.
To see whether the product identification is complete, the identification of regular products is often more standardized, should be identified: trademark and factory name, product model specifications, rated voltage, rated frequency, rated power.
Second, check whether the power cord of the lamp has the CCC safety certification mark, and the cross-sectional area of the external wire should be ≥0.75mm².
Third, check whether the charged body of the lamp is exposed. After the light source is installed in the lamp holder, the fingers should not touch the charged metal lamp cap.