... rubber silk 3.best quality,price & service 4.EN1177 rubbe brick paver certificate:EN1177 Size: 500 x 500 x 15-50mm ... , and bottom is black big crumb rubber This kind rubbe brick paver has some predominant capability, elastic, water-proof, slip- ... resisting, nonpoisonous,artistic and easy-install. rubbe brick pavers are mainly used in kindergarten, school,park, hotel, hospital ...