Add:No.3178,Renmin Road,Minzhi Street,Longhua District,Shenzhen City,Guangdong Province,China
1.See solder joints The regular LED lamp belt manufacturer produces the LED lamp belt is uses the SMT patch craft, uses the solder paste and the reflow soldering craft production. As a result, LED light on the solder point is relatively smooth and not much solder, arc-shaped solder point from the FPC pad to the LED electrode extension.And the Shanzhai version of the LED light welding spot solder is not uniform, more than a round point to cover the welding feet, at the same time there will be different degrees of tin tip appears, this is the typical phenomenon of manual welding.
2. Look at FPC quality FPC is divided into copper and calendering copper two kinds, copper foil is convex out, look at the words can be seen from the connection between the pad and FPC. and Calendering copper is close and FPC connected as a whole, you can arbitrarily bend without the phenomenon of the pad off.Copper plate if bending too much will appear pad off, maintenance temperature too high will cause the pad off.
3. See LED light with the surface of the cleaning degree If the use of SMT technology production LED light belt, its surface cleanliness is not good, see what impurities and stains.However, if the use of hand-welding technology produced by the cottage version of LED lights, no matter how the surface cleaning, there will be residual stains and cleaning traces, at the same time on the FPC surface will be flux and tin residue residue.
4. See Packaging Regular LED light will be used anti-static coil packaging, general will be 5.1-meter rolls or 10.1-meter rolls, and then outside the use of anti-static moisture-proof packaging bag seals.And the Shanzhai version of the LED lights because of cost savings, and the use of recycled rolls, and then there is no anti-static moisture-proof packaging bags, carefully look at the coil can see the appearance of clear labels left behind traces and scratches.
5. Look at the label Formal LED lights with bags and rolls will have printed labels, not printed labels.And the Shanzhai version of the label is printed, while the specifications and parameters are not uniform.
6. See Accessories Regular LED lights will be enclosed in the box with instructions and lights with specifications, and will also be equipped with LED lights with connectors or card block, and the Shanzhai version of the LED light boxes do not have these accessories, because some manufacturers are still able to save province.