The inner tank adopts the 1.2mm imported SUS304 stainless steel and automatic welding technology which reduces the corrosion. Inlet and outlet use the argon welding technology against 0.8MPa pressure. The heat pipe conducts the heat energy in the single direction and has some advantages in the quick operation, highly heating efficiency and anti-corrosion. It has some advantages of no water in tube, no filth, no broken tubes, anti-freezing, unlimited time of the inputting water and pressure operation.

For insulation, it adopts the polyurethane which has the even hole and good insulation efficiency. The frame adopts imported SUS301 stainless steel, the thickness is 1.2mm, which is strong and against the corrosion. The tail stock has a novel design and is quite easy to install.