1.fireproofing, heat preservation, and sound insolation 2.long life(about 30years);lower cost,convenient installment 1.Features: 1-1. Composed of 2 layers of weather ... .torages,exhibition halls,gymnasiums,freezing stores and purification workshops (tempkeeping,heat insulation,weight bearing,weatherproof,rich color and good appearance). 2.Light self-weight ...