1. College of Biological Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, China
2. Laboratory of Veterinary Drug Residues, Hebei Institute of Veterinary Drugs Control, Shijiazhuang, Hebei provience, PR China
3. Weifang Xiashan Weitai Biotechnology Co., LTD, Weifang, Shandong Province, PR China