Simple maintenance 1, flame retardant, super abs shell, using polymer epoxy sealing technology, has a beautiful shape, firm structure, reliable sealing characteristics. 2, inert gas welding and special glue secondary sealing to ensure no leakage. 3, unique design bolt safety valve, not only the advantages of valve regulated sealed, but also has the maintenance characteristics, during the entire life of regular maintenance such as water or acid supplement, extend the life to 50-100% 二. excellent performance 1, grid made of special allyos, strict control of the separator, electrolyte impurities and various processes, low self-discharge. 2, positive grid using a special multi-alloy, effectively preventing the battery capacityloss early.float use and recycling, and long life. 3, plates, bbuses , pole etc.optimized design, partitions resistance is very low, so the battery internal resistance is small, and good high-current discharge performance. 4, large rectangular grid plate block structure, proprietary technology 4bs formed to improve the specific energy of the battery, extending the cycle life. 5, using the absorption if ultra-fine glass fiber separator, it has low internal resistance, and good high-rate discharge performance.