Round of Single Layer

single layer 1)Structure: Ceramic coated surface granules Weathering grade asphalt Special fiberglass mat Weathering grade asphalt Back sand 2)Mat:fiberglass 3)Warranty:20 yeas 4)Standand:GB/T20747-2006 5)Color:Variety kinds,to be chosed lenght:1000mm width:333mm pieces/pack:21 pieces wight/pack:.30±1 With durable on-piece construction, they will hold their own against the elements. But because of a patented design feature, they will do something even better; replicate the appearance of two-layer dimensional shingles to an amazing degree. That means while you get a comfortable price range -- your roof gets a high-end look.