1,More than 10 years. 2, High temperature resistance,impact resistance,wear resistance 3,High hardness. 1, we are the first one to research the quartz stone and continuous creation.2, The quartz stone collection is widely used for kitchen tops, bathroom tops ,table, floor ,waall,other decoration front etc.3,non-scraping, spend hot is not bad,acid manitenance-free, non-toxic,non radioactive.4,Be ...