The R&D department of Yantai Land Air Conditioning has successfully developed two series of products, GSHP-C * * * GM and GSHP-C * * * GH, based on the needs of different waste heat recovery conditions in the market. All products use environmentally friendly refrigerant R134a, with a residual hot water temperature range of 20 ℃~55 ℃ and a unit outlet temperature of 60 ℃~85 ℃. GSHP-C * * * GM has a single unit heating capacity of 500~2200 kilowatts when the outlet temperature of the heat source water is 25 ℃ and the outlet temperature of the hot water is 70 ℃; GSHP-C * * * GH has a single unit heating capacity of 600-2600 kilowatts when the outlet temperature of the heat source water is 35 ℃ and the outlet temperature of the hot water is 80 ℃.