First of all, on the raw material: high quality raw materials are generally fine wool textile pure wool silk rugss, their hair long, even, soft, elastic, no hard root; inferior raw materials of the silk rugs is often poor-quality wool and acrylic mixed with mould modification pp fiber, its thickness, not short and hairy root, no flexibility when hand feeling, hard root. Second appearance: clear high quality wool silk rugss is beautiful, textured rich luster, color uniformity, patterns of structured, soft plush below, inverted line; while the poor-quality silk rugs color Dim, fuzzy patterns, plush sparse, pilling resistance of adhesive ash does not dirty easily. Sense of foot again: high quality wool silk rugss foot comfort, no adhesion sliding, resilient well, soon after stepping on to reinstate; inferior elasticity of the silk rugs are very small, very slow recovery from stepping on feet feeling rough, often with a hard object. Last look at process: superb quality wool silk rugss, silk rugs surface flatness, trace rules; inferior silk rugss are rough workmanship, line leakage and more threadbare, its weight is significantly less because of the density of quality products.