1. Hebei Key Laboratory of Functional Polymers
2. School of Chemical Engineering
3. Hebei University of Technology
4. Tianjin
5. P. R. China
6. Institute of Energy Resources
7. Hebei Academy of Sciences
8. Shijiazhuang 050081
9. Jinghua Plastics Industry Co. Ltd.
10. Langfang
11. Engineering Centre of Flexible Special Hose of Hebei Province
12. Hengshui