The absorption type large temperature difference series heat exchange equipment is a series of heat pump products successfully developed based on the profound scientific and technological innovation and R&D and manufacturing strength of Moon Tech, combined with latest patented technology of Tsinghua University, and the joint efforts of many experts, professors and elite teams. This series of products uses the primary water of the heat supply network as the heat source. Without increasing the number of thermal power plants, it greatly increases the range of regional heating area and effectively guarantees the heating temperature. It is a star product for energy saving and emission reduction.