Hangzhou Shuangfeng Electronics Co., LTD, began with CCTV security and surveillance home kits in 1992, then devoted us to CCTV professional power supplies in 2006. We distribute through a network of specialist distributors in all over the world and direct to OEM customers.We have strictly management policies from products design, materials purchase and inspection, production instruction, in-line inspection,pre-delivery inspection.We have strong assembly ability, advanced production and aging, test equipments, all our products are checked strictly before send out to buyers.Our goal is to keep growing in the hot competition world by providing more reliable products and more professional services.