?- PolyPlus Battery Company Inc
- Samsung SDI Co. Ltd
- LG Chem Ltd
- VARTA Consumer Batteries GmbH & Co. KGaA
- Panasonic Corporation
- Duracell Inc.
- Jiangmen TWD Technology Co. Ltd.
- TianJin Lishen Battery Joint-Stock CO.LTD.
- GS Yuasa Corporation