1. Liaoning Province Professional and Technical Innovation Center for Fine Chemical Engineering of Aromatics Downstream, School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang, Liaoning, P. R. China
2. Shandong Center for Food and Drug Evaluation & Inspection, Shandong, P. R. China
3. Shandong Freda Pharmaceutical Group Co. Ltd, Shandong, P. R. China