色偷偷91综合-色翁荡熄又大又硬又粗-色窝窝国产蝌蚪在线观看-色窝窝视频手机-色窝窝视频手机在线播放-色五月欧美

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: 久视频在线观看久视频 | 亚洲99精品A片久久久久久 | 97国产精东麻豆人妻电影 | A片粗大的内捧猛烈进出在线 | 国内乱码一线二线三线 | 一级毛片全部免 | 久久re视频这里精品一本到99 | 久久久99视频 | 国精产品W灬源码1688网站 | 国产精品天天影视久久综合网 | 青草草97久热精品视频 | 无码免费视频AAAAAA片草莓 | 国产精品国产三级国产在线观看 | 午夜精品成人一区二区视频 | 午夜婷婷一夜七次郎 | 日本道免费精品一区二区 | 精品香蕉久久久爽爽韩国 | 色视频在线观看网站 | 免费国产美女爽到喷出水来视频 | 2024一級特黃色毛片免費看 | 亚洲自偷自偷图片在线高清 | 久久爱国产视频在线 | 性加拿大高清xxxxx | 91精品一区二区三区在线播放 | 肉伦禁忌小说 | 亚洲成人免费 | 午夜福利国产在线观看1 | 干b视频在线观看 | 快点使劲舒服爽还要高清 | 蜜臀AV色欲A片精品一区 | xxxx欧美| 国产精品免费一区二区三区四区 | 一级毛片一级毛片一级毛片一级毛片 | 久久久久久电影 | 精品一区二区三区免费毛片爱 | 好看的电影你懂的 | 亚洲无碼网站观看 | 热门视频 | 最近免费观看高清韩国日本电影 | 一区二区三区91 | 91免费视频播放 |