Waterproof pigtailcable is single-mode/multimode fibres are positioned in the loose tubes, which are made of high modulus plastic materials,while the loose tubes strand together around metallic central strength member into a compact and circular cable core. For certain high fibre count cables, the strength member would be covered with polyethylene (PE). The water-blocking materials are distributed into interstices of the cable core,and the Aluminum Polyethylene Laminate (APL) is longitudinally applied around the cable core before a PE sheath is extruded over it