Just because I saw six more eyes, I distinguished

2022-07-22
  • Detail

Now when people are decorating their new homes, if the height of the room allows, they usually use the ceiling. On the one hand, it can increase the sense of hierarchy of space and appear more beautiful; Second, some pipelines can be well hidden

now when people decorate their new homes, if the height of the room allows, they usually use the ceiling. On the one hand, it can increase the sense of hierarchy of space and appear more beautiful; Second, some pipelines can be well concealed. It's not good enough to make a ceiling. Let's get another LED light strip. When the light is on at night, it's this feel. But the lights on the market are mixed. How can we identify the true and false ones and choose the ones with good quality? It takes a lifetime to see through a person's heart. It only takes 6 eyes to see whether the LED light band is good or bad

1. Look at the material &mdash& mdash; Shanzhai's are relatively stingy

high voltage light belts are basically made of PVC, and regular manufacturers will use domestic environmentally friendly materials, which is basically tasteless. Irregular manufacturers use secondary Recycled PVC materials, which will have a great plastic smell during production. Low voltage lamps are equipped with sleeves. Regular manufacturers will use silicone sleeves, while irregular manufacturers use PVC sleeves. From here alone, the price varies greatly

2. Look at fpc&mdash& mdash; For details, see Zhenzhang FPC, which is divided into copper clad and calendered copper. The copper foil of the copper clad plate is protruding. If you look closely, you can see it from the connection between the pad and FPC. Calendered copper is closely connected with FPC, which can be bent at will without pad falling off. If the copper clad plate is bent too much, the pad will fall off, and too high temperature during maintenance will also cause the pad to fall off

3. Look at the surface &mdash& mdash; Those who love cleanliness are good children

if the LED light belt produced by SMT process is used, its surface cleanliness is very good, and there are no impurities and stains. However, if the fake LED light strip produced by hand welding process is used, no matter how the surface is cleaned, there will be stains and traces of cleaning, and there will be flux and tin residue on the surface of FPC

4. Look at the solder joint &mdash& mdash; Finally, it's revealed.

the LED light tape produced by the regular LED light tape manufacturer is produced by SMT patch process, solder paste and reflow soldering process. Therefore, the solder joints on the LED light strip are relatively smooth and the amount of solder is not much. The solder joints extend from the FPC pad to the LED electrode in an arc shape. The amount of solder on the solder joints of the Shanzhai LED light strip is uneven, and most of them are wrapped by a dot around the solder foot. At the same time, there will be different degrees of tin tips, which is a typical phenomenon of manual welding

5. Look at the label &mdash& mdash; We are people with status

there will be printed labels on the regular LED light belt packaging bags and reels, rather than printed labels. The labels of the fake version are printed, and the specifications and parameters are not unified

6. Look at the packaging &mdash& mdash; It doesn't look like locals.

regular LED light strips will be packed in anti-static reels, usually 5 meters or 10 meters, and then sealed with anti-static moisture-proof packaging bags outside. The fake LED light belt will use recycled reels because of cost savings, and then there is no anti-static and moisture-proof packaging bag. A careful look at the reels can see that there are traces and scratches left when removing labels on the surface

昆明眼科医院

北京男科医院

成都男科医院

绍兴男科医院

Copyright © 2011 JIN SHI