1. R&D team can supply OEM service. 2. CE certification 3. Experience in DVR field: 4 years, 4. Warrenty : 2 years Support:Arabic,Czech,English,Finnish,Greek,Indonesian,Italian,,Japanese,Portuguese,Russian,Thai,T-Chinese,S-Chinese,Turkish,Brazilian,Bulgarian,Farsi,French,German,Hebrew,Hungarian,Polish,Romanian,Spanish,Swedish,VietnameseSupport smart mobile and network (IE&Firefox&Safari&Chrome) ...