C91 Their Signin System Upgraded Again

"Ye, have we got the D-grade freshwater ready?"

"Absolutely. Preparing 20 liters of Rare Level D freshwater is a piece of cake. I've mentioned before that we're rich in freshwater resources," Ye Chen said, looking completely at ease.

The electrically charged freshwater purifier was a basic model, capable of filtering only Rare Level D freshwater. Yet, its output efficiency was impressively high