1. Institute of Quality Standard and Testing Technology, BAAFS (Beijing Academy of Agriculture and Forestry Sciences), Beijing 100097, China
2. College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050024, China
3. Ulanqab Agricultural and Livestock Product Quality Safety Center, Ulanqab 012406, China
4. Datong Comprehensive Inspection and Testing Center, Datong 037000, China
5. Shijiazhuang Customs Technology Center, Shijiazhuang 050051, China