1.Used for elevator video surveillance system, video and audio signal transmission system 2. more than 10-y developing history RG Coaxial CableTypeStyle No./mm Material Diameter Material 1 2 Material Diameter Material Omhmm No./mm No./mm mm @100MhzRG-5/U-1/1.29BC4.7LDPE16/9/0.1624/8/0.16BC8.4±0.20PVC52.5RG-6/U13541/1.024CCS4.57LDPE16/9/0.1616/8/0.16TC7.4±0.20PVC75RG-7/U-1/0.914BC6.35LDPE24/7/0.18 ...