... environmental ,no radiation, no pollution ,no harm to body5) low water absorption, high waterproof6) Backing: Mesh, Ceramic, Porcelain, Marble, PVC ... Chinese river shell, black MOP , yellow MOP , pink Shell, pen Shell etc. 8) Processing technic: close, net sieve, microcrack, ... protect film, foam and pallet Outer package: carton Freshe water shell mosaic, natural white and dyed brown mixed checker ...