1. Solvay SA
2. Arkema SA
3. KUREHA CORPORATION
4. Adtech Inc
5. Shanghai Hiuv New Materials Co Ltd
6. Welch Fluorocarbon Inc
7. DuPont de Nemours Inc
8. Zhejiang Lantian Environmental Protection Hi-Tech Co Ltd
9. POLYFLON COMPANY
10. NEW MICROPORE INC.