(1)Factory; (2)ODM&OEM; (3)High efficiency,energy-saving&Eco-friendly; (4)Long life(up to 10~15 years); (5)High COP. ApplicationIt is mainly apply at school ,dormitory,star-level hotel,sauna,Spa, etc It is satify to large using water.(when it is working, water tank added hot water into water tank ;when consumption bigger than heating capacity,water tank temperature still keeping).Features:1.Using ...