GB/T 39307-2020荧光增白剂色光和增白强度的测定塑料着色法标准
英文:Fluorescent whitening agents—Determination of shade and relative whiteness—Plastic coloring GB/T 39307-2020介绍: 国家标准《荧...
英文:Fluorescent whitening agents—Determination of shade and relative whiteness—Plastic coloring GB/T 39307-2020介绍: 国家标准《荧...