In 2017, DTS reached cooperation consensus with Guangzhou TECHLONG on Nongfu Spring Project. Up to now, DTS provides 4 automatic Retorts, in 2019 the 4 retorts for bottle can coffee in Nongfu Spring factory to contribute more. In 2020, DTS provided Nongfu Spring Co., LTD with the project of sterilization process optimization and heat energy recovery improvement. Nongfu Spring Co., Ltd. is a drinking water production enterprise, founded on September 26, 1996, headquartered in Hangzhou, Zhejiang, with eight water source bases in Zhejiang Qiandao Lake, Jilin Changbai Mountain, Hubei Danjiangkou, Guangdong Wanlu Lake, Shaanxi Taibai Mountain, Xinjiang Tianshan Manas, Sichuan Emei Mountain and Guizhou Wuling Mountain.The company is a holding company under Yangshengtang. Its main products include bottled natural drinking water, vitamin water and black tea, etc. It was once listed as one of the top 100 enterprises in China's agricultural product processing industry. In 2019, Nongfu Spring launched charcoal people coffee series, without sugar black coffee, without sucrose latte, low sugar latte three tastes.