... . CE,RoHS, ISO certificates; 2. split pressurized; 3. warranty:1year for electric parts, 5years for vacuum tubes, CHARACTERISTICS 1. Module design, ... performance. 1. Φ70 direct-flow heat pipe solar collector seriesModelSize(W*L)mmTubeG.W. (kg)Absorb Area ... : Aluminum Alloy, 1.8mm thickness Solar collector: Jinta heat pipe vacuum tube solar collector series Working station: circulation pump, Flowing ...