(1)composition: 30 percent quartz base on 15www.lithiums.biz>5 (2) produce method: 15www.c-www.com>15 cuted from block(3)specification: 3000mm X 1200mm & 2400mm X 1600mm(4)thickness:from 12mm to 30mm(5)certificate: SGS(6)flexural strength(dry). (Mpa) : 26.4(7)apparent density(kg/m3): 2526(8)visual appearance: smooth Cinese Stone level surface,no defect,no crack(9)abrasion resistance(mm): 26.1(10)Mohs' scale of hardness: Grade 40