Safety and Explosion-proof: Good effectiveness of flame retardation and explosion-proof, little heat radiation, putting out fire rapidly. Since the space of oil-gas is protected safely, there can't be any explosion caused by open fire, collision, thunder, gunshot and welding. And the height of flame will not exceed 30 cm if burning occurred;

=Prevent tank's turning over: Eliminate surge. It can reduce the energy caused by swaying of the refined product about 40 times, decrease the static electricity caused by the swaying and friction, thus the oil tank can go smoothly when turning in progressing. Reduce the starting inertia. Shorten the braking distance. To be more safe for any emergency;

=Using less tires: Reduce wear and tear of the tires. The ordinary petrol tanks need to change tires 3 times in 2 years while the HAN oil tanks just need to change tires 2 times in 3 years;

=Anti-Static Electricity: No static electricity accumulation occurred in the course of loading and unloading petrol;

=Easy Maintenance: The cleaning is simple and can reach intrinsic safety, and the working time is short ( 1-3 hours). You can have repair welding at anytime with no explosion;

=Cathode Protection: Protect the inner wall of tank from corrosion ( avoid petrol leaking and prolong the tank's life);

=Small Volume: only occupy 0.8 percent volume of the petrol tank;

=Fire can be Put Out Easily: The height of flame will not exceed 30 cm when the manhole catches fire. And the fire can be put out immediately by covering the lid;

=Favorable to Environmental Protection: Have the function of inhibiting the volatilization of oil-gas and lowering consumption of fuels;