1, first determine the material: natural material or synthetic (PVC) material, a simple method can be used to determine the fire. Generally, natural materials are burned without odor and black smoke. The dust after burning is powder white ash. The synthetic (PVC) material has odor and black smoke when burning, and the burned ash is black ball. 2, water scrub: good wallpaper color fastness can be scrubbed with a damp cloth and maintenance. 3, green harmless: when purchasing, may wish to close to the product smell any odor, odorous products may contain excessive toluene, ethylbenzene and other harmful substances, there are carcinogenic effects. 4, color long-term: wallpaper surface coating materials and printing pigments are subject to optimization and strict control, to ensure that the wallpaper after long-term light (especially light-colored, white wallpaper) does not yellow. 5, see the pattern style: whether unique, the production process is excellent. Style effect wallpaper Naips LED Emergency Down Light is specially designed for ceiling recessed emergency lighting. Automatically light at once when buildings main power outage. NON-MAINTAINED type and it can customized the emergency time for different wattage. We can also add the LED emergency driver kits to match different kinds of your LED downlights. Led Downlight With Emergency Backup,Downlight With Emergency Backup,Emergency Light Downlight,Led Emergency Downlight Foshan Nai An Lighting Electric Co.,ltd , https://www.naipslighting.com