1. Check the main profiles: the wall thickness and material description of the main beam, whether the profile and accessories fit closely, and whether the movement is smooth. The balcony window with poor quality and design often has a big noise when the window sash moves, and the handle is not smooth.
2. Check whether the accessories use safe solid pneumatic tempered rivets. Some manufacturers in order to reduce costs, the use of ordinary steel rivets, which will cause frameless balcony use a long time loose, or even fall off. There is also a moving axle, to see its plastic composition and the quality of the shaft, whether there are bearings inside.
3. Check whether the glass has passed the national 3C compulsory safety certification and the original glass. In order to reduce the cost of glass frames above 30 yuan, some manufacturers have no glass frames. 4. To see whether the manufacturer is a one-stop service (business, measurement, design, drawing, installation, after-sales service), and whether it has qualification certification, some manufacturers do not have their own professional team, only a few salesmen. After receiving the order, if you hand it over to others, there is no guarantee of quality and credibility.
5. See whether the manufacturer's technology is professional and excellent and the after-sales service is perfect and guaranteed. There are high requirements in the design, production and installation of frameless balcony windows. For example, some high and low balconies, multi angle balconies, if the manufacturer's technology is not up to standard, it is difficult to handle them in place. There is also a perfect after-sales service, which is also the basis for the quality assurance of frameless balcony windows.
Please indicate the source of the article: Shanghai liefan aluminum alloy door and window factory//