... 30 mins. Ten-years of useful time guarantee The Luminescent Surface StoneOur Luminescent Surface can last for 6-8 hours by absorbing light ... colorful:Red, cyan, green, orange and purple ect.Our Luminescent Surface is extensive application: home and public countertops in kitchen, vanity ... ceiling, sideway of corridor, signboard, house number, billboard ect. The Luminescent Solid Surface Stone Usage 2