On March 21-23, 2019, the "2019 Chengdu International Environmental Protection Expo" was held at the Chengdu Century City New International Convention and Exhibition Center in Chengdu, Sichuan. This expo aimed to establish an exchange platform for the development of environmental protection industry between Sichuan and western China by leveraging their respective advantages and cooperating each other. There were more than 10 forum activities held at the same time through the expo which covered an area of 30 million square meters and had 450 exhibitors at home and abroad and 28000 visitors attending. DKT was invited in this expo and attached greatly to this "Chengdu International Environmental Protection Expo" .And on March 22, the association, which DKT had joined, Sichuan Environmental Protection Industry Association which had stood out from more than 1000 members units and won the honorary title of "Top 50 Environmental Protection Industry" twice since 2013 ,held the "Sichuan Environmental Protection Industry Association 2018 Annual Meeting and the Fifth Second Council".