SHENZHEN OTOP TECHNOLOGY CO.,LIMITED is one of leading professional manufacturers engaged in the security transmission equipment. We have the product design, production and sales of integrative high-tech enterprises. It owned by ten years of industry experience expert team and the most advanced production equipment. We have the strong technical force, rich production experience component.Our staple is SDI / HDMI / VGA / DVI / AHD / CVI / TVI optical transceiver, SDI repeater over coax, SDI Distribution amplifier, SDI / HDMI / VGA /AV converter, SDI/VGA/HDMI/DVI Fiber Extender, SDI / IP / HDMI extender over Coax, 1/2/4/8/16 analog optical transceiver, 100/1000M media converter.SHENZHEN OTOP pursues "quality first, customer first, service first" principle, and manufactures a large amount of high quality products with high sensitivity and good stability. Our products sells well all over the world, it has gained a good reputation in all of our clients.