... and repeat5.be according with the telcordia GR-326-CORE standard6.ferrule:excellent quality and high intensity zirconium dioxide ... product.Our company mainly specializes in developing and manufacturing optical fiber(patch cord) optic communication equipment,optic cable ,electric cable ... ,sfp transceiver(can do some brands with lower prices,such as Cisco, 3COM, H3C, HP, Extreme, Juniper, Ruijie, Zyxel, ...