They are thought as high quality products for their densities are well distributed;aperture is proper, high ductile, high oil resistance, not easy to corrode and fade away, easy to wash and soft.

• 毛细孔分布均匀、孔径适宜、韧度高、耐油性高、不易腐蚀、容易清洗干、不易变色、性质温和柔软，是美容界认定的一种高级产品。