亚洲国产精品无码av丨蜜臀视频在线一区二区三区丨无码人妻丰满熟妇a片护士丨精品美女国产互换人妻丨夜夜摸日日躁欧美视频丨成人韩免费网站丨中文在线天堂网丨999re5这里只有精品丨亚洲情a成黄在线观看丨爆操少妇丨999亚洲图片自拍偷欧美丨少妇人妻互换不带套丨免费无码又爽又刺激激情视频软件丨好吊妞这里有精品丨日韩av不卡在线播放丨日韩草逼视频丨婷婷六月色丨日韩av片观看丨日本日本乱码伦视频在线观看丨男女吻胸做爰摸下身丨天天超碰丨国产精品 中文字幕 亚洲 欧美丨久久av片丨av在线男人天堂丨国产69囗曝吞精在线视频

The National Silk Standardization Technical Committee (SAC/TC401) is a non-legal entity technical organization approved by the National Standardization Management Committee to engage in the formulation, technical review, and centralized management of national and industry standards in the professional field of silk in China. In accordance with relevant regulations of the National Standards Committee, it is mainly responsible for the formulation, revision, and centralized management of national and industry standards in areas such as silk yarn, silk textiles, and silk products in the silk industry of China.

The Secretariat of the National Silk Standardization Technical Committee is currently located in Zhejiang Silk Technology Co., Ltd., a subsidiary of CATHAYA Group. The national standard GB/T 24252-2009 "Silk Quilts" under its jurisdiction received the Second Prize for Technological Advancement by China National Textile and Apparel Council in 2012. In the National Standard Committee's evaluation of national technical committees in 2017, it achieved the highest level of "Level One" committee. The internationally developed ISO 15625:2014 "Silk - Testing methods for defects and filament characteristics" received the Second Prize for Technological Advancement by China National Textile and Apparel Council in 2019.