Granular CARDS are similar to wire CARDS except that the "card clothing" is made of a rough granular surface somewhat similar to rough sandpaper.

Notice, wet cloth is classical furniture predators, because a wet rag in the water and sand mixture will be the formation of granular objects, is very likely to scratch the surface of furniture.

The characters of pore and surface of Activated Carbon Fiber (ACF) and Granular Activated Carbon (GAC) were analyzed through the combination of instrument analysis and absorption model.