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: 精品国精品国产自在久不卡 | 免费日韩中文字幕 | 99久久精品国产一区二区成人 | 在线观看视频精品 | 国产高清精品福利私拍国产 | 中国一级a毛一级a看免费视频 | 美国久久久久久 | 美女视频黄又黄又免费高清 | 久久综合亚洲色一区二区三区 | 国产91大片 | 久久国产高清视频 | 无码中文字幕dⅤd免费放 | 久久久精品视频免费 | 亚洲无码av一区2区三区四区 | 国产九一视频在线观看 | 一区二区在线不卡 | 99热亚洲| 久久人人看 | 无遮挡吃奶视频国产精品 | 免费一区二区中文字幕 | 老鸭窝a天堂av国产 国产免费a∨片在线观看不卡 | 久久精品在线播放 | 精品国产乱码久久久久久预案 | 97免费人做人爱在线看视频 | 在线观看国产精品一区二区 | 亚洲精品国产偷五月丁香小说 | 亚洲免费网站观看视频 | 亚洲另类伦春色综合图片 | caobi网站| 欧美一级做a爰片免费视频 日韩在线理论 | 国产成人AV一区二区三区无码 | 2级毛片 | 欧美一级黑人 | 亚洲成人网一区二区 | 久一久久 | 久久久久久网站 | 欧美精品乱码久久久久久按摩 | 亚洲一区二区三区四区在线 | 综合色区| 看一级黄色录像片 | 日韩一二区在线 |