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。

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The ultra-wide aperture is a pleasure to use: backgrounds just a few feet behind the subject become soft pillows of blur.

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