... Shell Thickess:1.5~2mm 4) environmental ,no radiation, no pollution ,no harm to body5) low water absorption, high waterproof6 ... ) Backing: Mesh, Ceramic, Porcelain, Marble, PVC, Magnesium oxide, Cement board , postercloth etc.7 ... of life to contact us for future business relationships and mutual success! please no hesitate to contact us if you ...