ShenZhen allkeybattery co., ltd. Is a company incorporating scientific research.Manufacturing and marketing.Our company specicalizes in producing of mercury-free alkaline batteries,Mercury-free super heavy-duty zinc-carbon.Batteries,3v-CR lithium batteries,AG-Button alkaline batteries,SR-silver oxide batteries and NI-MH(cylindrical & prismatic) rechargeable batteries.We obtained the certification of ISO 9000 international quality guarantee system and 5s system. Our product have passed the CE in ...