http://pastport.jp/user/bettersizeinstrument ja-JP Founded in 1995, Bettersize is China's famous particle size testing technology research and development base, and one of China's largest particle size analyzer manufacturers. 2020-01-14T14:58:24+0900 http://pastport.jp/user/bettersizeinstrument/timeline/Dandong%20Bettersize%20Instruments%20Ltd. bettersizeinstrument http://pastport.jp/user/bettersizeinstrument/timeline/Dandong%20Bettersize%20Instruments%20Ltd.