We are Shenzhen tyam sci & tech corp, ltd. Founded in 1997, are one of the leading manufacturers of security products in china. The products include dvrs (pc & s / a) , quads and multiplexers, ccd / cmos / IP cameras, wireless, lens, pan / tilt controllers, switchers, brackets and housings, peripherals, alarm systems, and access controlWith high quality, reasonable price, attractive design, fast delivery and tailor-made service, our company is now recognized throughout china as well as other countries. With support of tsinghua university, we have set up client-oriented system comprised of fore-sale, on-sale, after-sale service, which bring great convenience for our customers and strengthen their supply and value chain. We will permanently pursue the goal of keeping innovation, pursuing the perfect quality of products and offering excellent service. We are willing to establish business relation with you.