AGC Inc. China Glass Holdings Limited
China Luoyang Float Glass Group Co. Ltd. Compagnie de Saint-Gobain S.A. CSG Holding Limited
Fuyao Glass Industry Group Co. Ltd. Glas Trosch Holding AG
KCC Corporation
Koch Industries Inc. (Guardian Industries Holdings LLC)
MFG SpA (groupe CEVITAL)
Nippon Sheet Glass Co. Ltd. (Pilkington Group Limited)
Schott AG
Taiwan Glass Industry Corporation
Vitro S.A.B de C.V. Xinyi Glass Holdings Limited
Zhuzhou Kibing Group Co. Ltd.