How does Angel bring innovative water purification technology into millions of households

How has the demand for a glass of water in Chinese households changed from "boiling water" to "clean water throughout the house"? How can a company overcome a reverse osmosis filter with only 0.0001 microns when its core technology is controlled by others? What innovation makes whole house water purification possible when facing the spatial challenges of small and medium-sized apartments? On the occasion of National Science and Technology Workers' Day, this issue of the "Editor in Chief Dialogue" column has a conversation with Zhao Kai, Vice President and Chief Scientist of Angel Group. See how Angel, with a scientist culture, persists in doing "difficult but right things" and brings innovative water purification technology into millions of households.