All imports of stainless steel 304 1.5mm thick # imported materials, durable, health, environmental protection, high quality stainless steel fire tube material, to enhance product durability, automatic feed water control, with anti-dry function, no electric cut-off, no gas power, water and fire, fan combustion, active fire tube design, energy-saving, fast, convenient repair, practical design, large volume, intelligent temperature control, easy operation. Ps:according to customer requirements and provide customized non-standard designs. Wooden shell