The paper during the production process, in order to improve its jiebai degrees, most use on humans and animals have great taintthe of fluorescent whitening agents for processing.

 
  • 这些纸张在生产过程中,为了提高其洁白度,多数都使用了对人和动物有很大毒害作用的荧光增白剂进行处理。
今日热词
目录 附录 查词历史