Corning Inc.; Sumitomo Electric Industries Ltd; Prysmian Group; Sterlite Technologies Ltd; Fujikura Ltd; TE Connectivity; 3M; Amphenol; Molex; Prysmian;; Finisar Corporation; AFL Communications LLC; General Cable Corporation; LS Cable & System (LS Group); Yangtze Optical Fiber and Cable Joint Stock Ltd Co.; Furukawa Electric Co. Ltd; HUBER + SUHNER; Nexans; LS cable; Aptiv; YOFC; HTGD; Radiall; OFS Furukawa; Belden; CommScope; Leoni AG; Furukawa Electric Co. Ltd.; Coherent Inc.; Hengtong (HTGD