国产9 9在线 | 中文丨天天看天天干丨男女爽爽无遮挡午夜视频丨无码丰满少妇2在线观看丨91精品国产美女在线观看丨欧美xxxx在线丨亚洲精品揄拍自拍首页一丨色综合av综合无码综合网站丨黄色美女毛片丨国产福利一区二区精品秒拍丨超薄丝袜足j好爽在线丨日韩av一二区丨大人和孩做爰aⅴ18丨欧美福利社丨狠狠狠色丁香婷婷综合久久88丨成人网18免费网站丨国产无遮挡又黄又爽奶头丨午夜理论电影在线观看亚洲丨sm在线看丨亚洲成a人片在线www

The dyeing temperature of the regenerative semi-extinction/full extinction/bright section series is 115℃-130℃.

Cations in dye molecules tend to replace sodium ions of sodium sulfonate groups (-SO3NA),

Making the fiber easy to dye, high dyeing rate, and bright color,

At the same time , hygroscopicity  also improved