Specializing in the development and manufacture of mobile digital power suppliers, Shenzhen Tsumpower Co., Ltd. is a high-technology enterprise incorporating science research, industrial production and trading. With a 20,000 square meter production base and near 1000 employees, our production capacity value has reached USD45 million. Our Pisen brand products include Ni-MH batteries and matching chargers, digital video recorder and camera batteries and chargers, and durable alkaline batteries, as well as related products. We have attained CE, UL, RoHS and CQC approval, and have also obtained many national patents. Moreover, our company is ISO9001 certified. Shenzhen Tsumpower employs many superior battery and charger specialists who have formed our powerful R&D team both in Shenzhen and Chengdu. Through our independent professional technology team and solid technical sources from national key universities and science research academies, this team is devoted to the research and development of digital product power sources. They have been developing new products in the power source industry for many years.