Shenzhen Powerfirst Technology Co., Ltd . is a direct manufacturer of battery packs. We are dedicated to manufacturing all types of batteries for use in various laptops, digital cameras, camcorders, PDAs, mobile phones, walkie-talkies and universal internal & external batteries, single chargers & multifunctional chargers as well as related products. We also deal with photogriphic accessories i.e battery grip ,shuttle release , MACRO EXTENSION TUBE; Remote switch Series; TTL FLASHCORD; FLASH DIFFUSER ; wide angel lens; lcd protector ...