Leader of high-temperature cascade heat pump technology, heat pump intelligent remote diagnosis technology, water system anti-leakage automatic water replenishment technology, and aluminum heat exchanger rapid defrosting and snow melting technology. Among them, the cascade air source high temperature heat pump unit can meet three types of heat energy: 75℃ high temperature/90℃ ultra-high temperature/120℃ extra-high temperature, and is suitable for harsh environments from -35℃ to 50℃, and is in a leading position in the field of high temperature heat pump technology. The intelligent remote monitoring system adopts the latest 5G mobile remote technology, which can monitor the operating status of the heat pump equipment at all times. If the operating status is abnormal, the background will automatically alarm, and troubleshoot the customer at the first time, saving the time of on-site maintenance.