1. Look at the material
High pressure lamp belt basic PVC material, regular manufacturers will use domestic environmental protection materials, basically no taste. Irregular manufacturers use secondary recycling PVC material, production will have a great plastic taste. Low pressure lamp sleeve, regular manufacturers will use silicone sleeve, non-standard manufacturers use PVC sleeve, from here alone, the price is very different.
How to judge the merits of led corn lamp customized length?
2. Look at the FPC
FPC is divided into two kinds of copper and calendered copper. The copper foil of the copper plate is protruding. If you look closely, you can see from the joint of the welding pad and FPC. The calendered copper is closely connected with the FPC as a whole, can be bent arbitrarily without the phenomenon of pad falling off. If the copper plate is bent too much, the pad will fall off. Too high temperature during maintenance will also cause the pad to fall off.
3. Look at the surface
If the SMT process is used to produce led corn lamp customized length, its surface cleanliness is very good, see what impurities and stains. However, if the copycat version of led corn lamp customized length produced by hand welding process is used, no matter how the surface is cleaned, there will be residual stains and cleaning traces, and flux and tin residue on the surface of FPC.
How to judge the merits of led corn lamp customized length?
4. Look at the solder joint
Regular led corn lamp customized length manufacturers of led corn lamp customized length is produced by SMT process, solder paste and reflow process. Therefore, the solder joint on the led corn lamp customized length is smooth and the amount of solder will not be much, and the solder joint is an arc shape from the FPC welding pad to the LED electrode. The copycat version of the led corn lamp customized length of solder joint solder amount is not uniform, more than a dot to cover the welding foot, at the same time there will be different degrees of tin tip, which is a typical phenomenon of manual welding.
5. Look at the label
Regular led corn lamp customized length packaging bags and coils will have printed labels, rather than printed labels. But the copycat version of the label is printed, and the specifications and parameters are not uniform.
How to judge the merits of led corn lamp customized length?
6. Look at the packaging
Regular led corn lamp customized length is packed in an anti-static coil, usually 5 meters in a roll or 10 meters in a roll, and then the outside is sealed in an anti-static moisture-proof bag. The copycat version of led corn lamp customized length will use recycling coil tray because of cost savings, and then there is no anti-static moisture-proof bag, carefully look at the coil tray can see the appearance of the marks and scratches left when removing labels.
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