On December 6, 2019, the four-day Shanghai Frankfurt Exhibition and Chentai Nano Product Recommendation Conference ended perfectly, and every participant in Chentai Filter Paper gained a lot. From every little detail in the exhibition hall to the last moment of the exhibition ending, Chentai devoted his seriousness and enthusiasm to the best effect of this exhibition, especially the promotion of the new generation of nano products achieved the expected results and was praised and affirmed by professionals from all walks of life.