国色天香免费视频日本_特黄男女交性A片激情视频_国产真实乱对白精彩久久_色综合久久久久综合一小说_成人欧美大片免费观看_国产一级一区二区三区

Online Sevice

  • Nantong YUEYE Textile Co., Ltd.
  • Tel:0086-513-85261533 
  • Fax:0086-513-85261511
  • ADD:No,1111 Taiping Road(N),Guanyin Shan Street,Nantong Jiangsu.China
  • E-mail:gjx@jsyyfz.com

Method of identification of pure wool fabrics
2015-01-13 00:00:00

methods


Sense of touch. Pure wool fabrics usually feel smooth, long wool fabrics along with the feel of smooth, reverse hair tingling. And blended or pure chemical fiber, some less soft, some too soft and loose, and sticky feeling.


The colour and lustre. The color of pure wool fabric is soft and natural, bright and timeless. In contrast, blended or pure chemical fiber fabrics, or luster is darker, or have a sense of flash.


The elastic. Hold the fabric tightly by hand, then release it immediately to see how elastic the fabric is. Pure wool fabric rebound rate is high, can quickly restore to its original state, and blend or chemical fiber products, wrinkle resistance is poor, most of the more obvious wrinkle marks, or slow recovery.


Combustion identification. Take a bunch of yarn, use fire, pure wool fiber smell like burning hair, chemical fiber smell like burning plastic. The harder the particles are after combustion, the more chemical fiber components there are.


Single root identification. Hair under a microscope to see all the animals have scales, if is long hair fabrics as long as take a hair like above laid a few times will move up or down (to master this skill can take a hair from the first experiment), if it is a normal fabric, extracting a root yarn, cut 2 cm of the two paragraphs into one fiber under the hand rub four or five, they would not move.


主站蜘蛛池模板: 国产精品粉嫩jk国产呦系列 | 精品欧美亚洲韩国日本久久 | 四虎色| 在线看免费无码av天堂的 | 91九色免费视频 | 97夜夜澡人人爽人人喊中国片 | 亚洲欧美成人一区二区 | 日本一区二区三区免费软件 | 国产tv日韩在线观看视频 | 久久久久久久久久久免费 | 国产精品一区二区三 | 国产伦精品一区二区三区 | 国产成人综合亚洲欧美丁香花 | 国产精品美乳一区二区免费 | 久一区二区 | 免费亚洲精品 | 7788成人网站免费观看 | 三级高清自拍少妇 | aⅴ免费在线观看 | 一品色堂 | 国产精品久久久久久久久久久威 | 免费多国毛片在线播放 | 欧美一区二区三区中文字幕 | 国产精品羞羞答答xxdd | 91色网站 | 亚卅在线有码无码免费 | 色爱综合区网 | 中文字幕一二三区有限公司 | 亚洲天堂AV网站在线观看 | 少妇av射精精品蜜桃专区 | 亚洲AV福利院在线观看 | 成人亚洲精品久久99狠狠 | 精品免费视频一区二区 | 日本丰满熟妇videossex | 一级毛片在线看aaaa | 好好干天天日 | 国产精品一二三区成毛片视频 | 亚洲日产精品一二三四区新增区域 | 精品久久久久国产免费 | 亚洲区视频在线 | 嫩草午夜 |