用在帐篷的涤纶印花布,如何做到多纤沾色由3级提升到4级？

<span style="color:#666666;font-family:&quot;background-color:#F9F9F9;">可以使用牢度提升剂G-616</span><span style="color:#666666;font-family:&quot;background-color:#F9F9F9;">，索样/定制，请联系：刘小姐：18038728083（微信同号</span><span style="color:#666666;font-family:&quot;background-color:#F9F9F9;">）</span>