... -burned ecological composite regenerative tiles machine series. WZ-3500 automatic non-burned roof tile machine www.midbm.com.cn WZ ... damp proof, anticorrosion, antifoaming sound insulation, heat insulation High hardness and suitable toughness elasticity ageing resistance Longer life.2 ... ,anti-freezing.7,alkali and acid resistant,8,high strong anti cracking9,defending typhoon10,no radiation,11, ...