There are two key points in identifying good and bad plastic steel profiles. First, look at the appearance. High-quality profiles have uniform dimensions, reasonable inner cavity structure, soft color, smooth protective film, no bubbles, and the wall thickness of the extended part is generally 2 mm. The second is to look at the anti-counterfeiting code. The anti-counterfeiting code is stamped on the side of the genuine plastic steel profile. It consists of 20 dot-shaped Arabic numerals. The numbers are clear and easy to identify, without duplication, and are not easy to erase. The numbers printed on inferior plastic steel profiles are blurry and easy to erase, and the numbers are often repeated.

First of all, check whether the packaging of the profile (that is, the protective film on the profile is also the trademark) is flat and smooth, whether there are bubbles, and whether it is in a straight line from one end to the other. The trademarks of counterfeit profiles are affixed by hand, and there will be a lot of bubbles and crookedness. The quality of the trademark is also very poor, which can be seen if you look closely. Tear off the protective film and look at the surface of the profile. The surface of a good profile is very flat and smooth, with no uneven spots. It is bright and the color is very white (like milk). Look at the wall thickness of the profile. The main wall thickness of a good profile can be When it reaches more than two millimeters, there is also the toughness of the profile. You can use a vise to clamp the wall of the profile and break it back and forth. A good profile will not fall off easily (not applicable in winter, because the temperature is relatively low in winter and the plastic will become very brittle). Strict Generally speaking, according to relevant national industry regulations, processing of plastic steel windows is not allowed in environments below 10 degrees Celsius. The next step is to look at the anti-counterfeiting inkjet code. There will be anti-counterfeiting inkjet code on the real profile. Generally, you can tell the authenticity without making an inquiry call. There will be 4 to 6 inkjet coding groups on a 6-meter-long profile. First of all. Check whether the handwriting of the inkjet group is clear and complete (the counterfeit profiles are all painted manually with a simple transfer machine after leaving the factory, which will be blurry). The inkjet groups of the real profiles are unique, while the inkjet sets of the fake profiles are (Through a batch) the coding groups are all the same (depending on the equipment cost). Also make an inquiry call to check the coding.