When we stick the insulation film, we always want the better heat insulation, but the lighting of the room should also be considered. If your glass windows is very large and light is too strong, we can select the products that have high insulation, namely products of which the total heat rate is above 70%. If the glass is small and the lighting is normal, you can not just consider high insulation, but translucency should also be taken into account because when it is cloudy, the room becomes relatively dark and you have to opened indoor light sources earlier than usual.We know that a glass film is an energy-saving product, but it will waste energy when you turn on the lights in advance.Products of which the light?transmittance is 30% -50% should be used in room that has average lighting.In rooms that have poor lighting and small windows, you should choose models of which transmittance is more than 50%.
Firstly, look at the design and colour. In order to identify whether the household colourful film is good or bad, you should first check whether the color is even, whether there is chromatism and bleeding. Usually a pattern is better when the pattern is more clear. In the next step, you should look at the tenderness, which is mainly for non-woven fabrics and wall coverings, etc. You have to look at both sides. Usually the quality is better if density of the surface wove is higher. Secondly, touch it and feel its toughness. Some people think that household colourful film is better when it is thicker, which is a misunderstanding. The quality is related to the quality of paper, production technique and toughness, and thickness, and not directly related to the thickness. When you identify the wallpaper by hand, you should touch it and feel and toughness, particularly for flocking wallpapers. They are most likely to feel the difference between good and bad. Usually the quality and toughness is better when it is softer. But when domestic and imported products that are made of the same material are compared, the imported ones will be relatively thick and of higher density. Third, smell it. Inferior household colourful film has bad smell. In addition, the real environmentally friendly film has no smell, but if it is made of inferior materials, it will have a pungent smell. You can smell it when coming close to it. Fourly wipe it. Wear-resisting and soiling-resisting should be tested. It is recommended that consumers draw some lines on the paper and the wipe them in the purchase process. Generally high quality colorul decoration film can easily be cleaned even if the surface is bumpy, but if it is of low quality, it is easy to be scraped or not easy to be cleaned.
