Lumentum Holding Inc. Ciena Corporation
II-VI Incorporated
Nexans S.A
Corning Incorporated
Optical Cable Corporation (OCC)
Leoni AG
The Furukawa Electric Co. Ltd. Prysmian S.p.A. Sumitomo Electronics Industries (SEI)
CommScope Inc. TE Connectivity Ltd. Fujikura Ltd. Yangtze Optical Fibre and Cable Joint Stock Limited. STL