... Greetings!!!!!!!!!! Safe Vision Technology is a professional security products manufacturer, we specialize in designing and manufacturing, H.264 standalone DVRs (4ch ... make 30,000 DVRs monthly, as an FCC certified company, we've been focusing on the quality control, QC process ensures the ... team will provide you 24/7 before & after sales services, we also offer 2-year warranty for our products, there is ...