Shenzhen BOSSD and Technology is an engineering company in the field of Design, R&D , Manufacturer, Marketing, Exporting of many kinds of security & protection products, such as. Video Door Phone System, CCTV Camera, IP Camera, DVR, etc.Technology and excellent teams are the continuous motivator of our progess. Our experienced R&D enginees work to ensure the products good quality, special and perfect. We own four professional producing centers to ensure the production. Welcome OEM & ODM.