On April 19, 2023, the 24th China World Expo opened in Shanghai. After two years, the Environmental Expo returned to the Shanghai New International Expo Center, and environmentalists and chemical companies from all over the world came to reappear the phenomenon of "people in crowds". Founded in 2016, Xinkunyuan Environmental Protection has provided one-stop sludge drying and waste liquid reduction services to more than 200 industrial enterprises. As of