1. Beijing Key Laboratory of Lignocellulosic Chemistry
2. Beijing Forestry University
3. P. R. China
4. Tianjin Key Laboratory of Pulp & Paper
5. College of Materials Science & Chemical Engineering
6. Tianjin University of Science & Technology
7. Tianjin 300457
8. Yuannan Pharmaceutical Industrial Co., Ltd
9. Kunming 650106