... 150L,200L,250L,300L,400L,500L,600L,700L,800L............solar water collector1) Reliable, efficient, twin-glass evacuated tubes2) Red ... anytime and enjoyable6.multifunction:bathing,washing,domestic heating,swimming pool, heater floor...7.anti-freeze:using the anti-freezing ... layer,compressed rock woolHeat Pipe pure red copper TU1+water,transfer power>=150W,Working pressure,4Mpa,welding pressure 4MpaDust ...