BDF water tank is a new product.tank panels using screws to link, no-welding, no-corrosion and no-leakage. BDF panel consists of stainless steel panel and galvanized steel panel. The inner side (touching water) is stainless steel panel so as to guarantee the water quality; the outside is thick galvanized steel panel so as to strengthen the whole tank strength. BDF water tank does not take up so much overground valuable space, does not break the surrounding environment. So underground BDF water tank is warmly welcomed by first party and designing institute...