Shandong Liangzou Mineral Industry Group Company invites power supply experts of Chinese Academy of Sciences as guide, specializes in Ni-Cd battery and Ni-Mh battery produces AAA, 2/3AA, 4/5AA, AA, A, 2/3N, 4/5N, N,SC, 5/4C, C, 2/3D, D,1870 size nickel cadmium battery and nickel hydride battery and theirs packs. We can provide other size and capacity of the battery according to requirement. Our products have passed ISO9001-2000, American UL certificate and Germany Rhine TÜV Safety.