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: 中文在线一区二区三区 | 最新高清无码专区在线视频 | 激情一级| 538久久| 人妻激情偷乱视频一区二区三区 | 精品国产乱码久久久久久密桃99 | 69产性猛交xxxx乱大交 | 成人免费观看网站 | 特级做a爰片免费看一区 | 免费成人在线视频观看 | 精品国产成人 | 国产99页| 中国高清av | 国产精品v欧美精品v日韩 | 992tv在线观看免费进 | 国产中文av在线 | 韩国一级免费 | 日韩亚洲二区 | 久久精品88| 欧美精品久久久久久久久免 | 精品国产久 | 久久久看 | 免费av一级片 | 久久一区二区三区免费 | 日韩av一区二区三区在线 | 久久福利| 日本高清视频网站WWW | 久久国产毛片 | 99视频网 | 国产精品一区2区三区内射 性欧美大战久久久久久久久 | 国产成人午夜福利在线观看蜜芽 | 97精品超碰一区二区三区 | 久久精品亚洲乱码成在人线 | 亚洲欧美在线视频免费 | 国产成人欧美一区二区三区八 | 一级片免费看 | 国产精品一区二区白浆 | 久久久久久久久久久国产 | 伊人色综合久久天天网图片 | 亚a在线 | 久久久com|