ASD-Engineering, is a professional company for CCTV,ALARM SYSTEMS,ANTITHEFT SYSTEMS and AUDIO SYSTEMS products.ASD company has attracted a group of professional engineers & technicians.They give prompt technical support, and set strict quality control rules. N.p.sh. " Asd-engineering " is a confident to deliver quality productsin short time. As for warranty period, we provide whole life maintenance. Every product in our website is tested and checked by our in-house technicians for excellent quality. Our sales staff have rich good experiences and professional SECURITY SYSTEMS knowledge, who can lead customers&＃39; need and help them to find the proper products for their market. Professional technology support and timely sales-after service are our responsibility.Our products are exported to many countries and regions, North America, UK, Finland, Brazil, South Africa and so on. To expand our international market share, we sincerely welcome you to contact us for more information.