... A .High resistant to shock, compresion,abrosion, and stains caused by products of daily use like make-up, wine, vinegar,lemon juice ... scratch ,abrosion ,compression and shock.What is more, our products have a non-porous appearance of high density, which makes ... much radioactivity which does harm to human'health.However, our products is very enviromentally friendly ,because it isnon-radiative.D. ...