... , etc. 2:Environmental 3:Natural river shell 4:Finishing:polished 5.OEM shell mosaic:Feature:1) Usage: Suitable for ... product thickess:5~20mm or others Shell Thickess:1.5~2mm4) environmental ,no radiation, no pollution ,no harm to body5) low water absorption ... natural shells, such as mop shell, ablone shell, Chinese river shell, black MOP , yellow MOP , pink Shell, pen Shell etc.8) Processing technic: ...