... glass 3.37) Solar working station8) With heat pipe: anti-freezing > -35 degrees centigrade9) Water capacity: 150L, 200L, 250L, 300L, 500L ... ,1.8mm,Insulating layer,compressed rock woolHeat Pipe pure red copper TU1+water,transfer power>=150W,Working pressure,4Mpa,welding ... 390.5Container Loading Quantity(set)20102787763574022116916613613040HQ278213209172171Price(USD) Split heat pipe water heater system