Description：Expanding technology from Italy-good HRD capacity. Punching technology-excellent corrosion resistance,long life. Special terminal cold extruding technique and lid with inlaid cold-extruding lead tub ,preventing acid leakage. Special lead alloy technique combine the component of calcium, tin and aluminum,making sure the grid in good corrosion resistance. Maze style type exhaust structure assembling the air filter,preventing the release of acid fume,less water lost. Special curing technology making the paste and grid combine firmly
