Collector: 47-1500, 58-1800, 70-2000 the new unit triplet gradation membrane collector vacuum tube is efficient in heat absorption and temperature rising. Inner tank material: sus304-2b imported food-grade stainless steel. Outer covering material: imported high-quality aluminum-zinc coated steel plate and imported fluorine carbon plate. Heat insulating layer: 50-65mm polyurethane integral pressure foaming. Bracket material: high-quality aluminum-zinc coated and plastic-sprayed bracket, all kinds of colour is available, the design is more reasonable, the color is more beautiful, it can be fixed flatly or scantly. 150*50*50cm, 50kg