... : Grade A1 Advantages of Terracotta Panel , comparing with Stone and GlassNO.ContentsTerracotta PanelNature StoneGlass1Materialhard or soft terracotta,claygranite ... insulation, light-weight, greatly saving steel,half of stone's heat-conducting, recycling.low heat and noise ... to process too much, little wastemuch wasting water, stone material is limited, causing great damage to environmentlimited ...