@hh86ll
Active 3 년, 1 개월 전
https://www.xingshengbrush.com/toothbrush/
Toothbrush design is little changed from its earliest form. The biggest difference is in the materials: toothbrushes are now all made of at least some plastic. Take a tour of the humble toothbrush and find out how it affects the environment.
At first, years ago, it was just an occasional piece of […] 보기