中文巨乳在线,亚洲免费中文字幕免费视频,巨乳中文字幕_腾讯新闻
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      POY filament
      POY filament

      Note: POY is nylon undrawn yarn, it is also known as pre-oriented nylon yarn. It has larger elongation, about 65-72%, lower strength, 3.7-4.0Cn/dtex.

      Application: POY is mainly used in narrow fabrics, such as weft of nylon ribbon, or edge of other fabrics.

      中文巨乳在线,亚洲免费中文字幕免费视频,巨乳中文字幕_腾讯新闻