How to choose high-quality asphalt shingle - colored stone granules?

Fiberglass asphalt shingle, what catches your eye is its various shapes and rich colors. What is the difference between the seeming identical roofing shingles? The colored sands on the surface of the asphalt shingles are very particular. High-quality colored sands are with excellent performance of waterproofing that effectively prevent the water entering the shingles. Besides, clients have great concerns on fading issue. In fact, there are two kinds of colored sands. One kind of colored sands is the high-temperature sintered stone granules selected by Jingda . It is made of basalt stones with ceramic process at 800-1200 degrees Celsius. The basis of the porcelain process makes the colored sands has a beauty of texture and also durable and unfading. The other type is dyed sands, it with low cost. The asphalt shingles using this type of sands looks brighter, however it will be fading after being washed by rain. Therefore, choose correct quality asphalt shingles will be the right desicion considering the long term benefit.