More than 4 years for working CCTV industry, these experience helping me know about CCTV a lot.Now, woking in Sinovision ,who is a professional CCTV manufacture Located in Shenzhen, China.Sinoivision,one of the most professional manufacturers in security industry in China, Provides comprehensive services that cover R&D, producing, marketing and after sales service. Our full range of various products including Analog CCTV Camera,HD SDI Camera, Speed Dome Camera, DVR and HD IP solution meet customers' demands in both domestic and overseas market, and built in an excellent reputation in the world. We have a specialized R&D team and the high quality terminal production equipments. Our R&D team are constantly devoted to improve existing products and develop new products in order to provide our global customers with top-quality products, they accumulated a wealth of experience in the CCTV and IT industries after these years’ development. We insist strictly inspection in process, and always consider about its lifetime, safety, heat-resistant to make them reliable. Our 25 QC staffs are assigned to each production line. The complete quality control system consists of 12 procedures including raw materials test, vibrating test, voltage test, semi-finished products inspection, 40C for 48-hour aging test, waterproof test and finished product inspection, etc. So you can rest assured your cameras will have the quality you demand. All our products are CE, FCC certified, and also compliant with the RoHS Directives “Your Safety, Our Concern” is all that we work for, and it is our honor to provide excellent service and quality products to meet your requirements. Contact us today!! Sincerely looking forward to building a mutually beneficial business relationship with you.