?- GrafTech International Ltd.
- Nacional de Grafite
- NeoGraf Solution
- Northern Graphite
- Qingdao Black Dragon Graphite Group
- Qingdao Jinhui Graphite Co. Ltd
- Qingdao YanXin Graphite Products Co. LTD.
- Sanyo Corporation
- SGL Carbon
- Shijiazhuang ADT Carbonic Material Factory
- Yichang Xincheng Graphite Co. Ltd.