CCB Nancheng Branch is located in Dongguan city. LASUN CAT6 products are used. This network cabling system adopts the star topology, data backbone is based on fiber, voice backbone is with Cat3 Multi-pair Cable, Horizontal Cabling use LASUN Cat6 twisted pair cable, which require the speed at 1Gbps and 10M/100M/1000Mbps at least, to meet  the network information transmission and office automation application between branches.