1. Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Institute of Quality Standard & Testing Technology for Agro-Products, Beijing, China
2. Key Laboratory of Agro-product Quality and Safety, Ministry of Agriculture, Beijing, China
3. Tibet Autonomous Region Agricultural and Livestock Product Quality and Safety Inspection Testing Center, Lhasa, China
4. Agro-Product Safety Research Center, Chinese Academy of Inspection and Quarantine, Beijing, China
5. Changgao Agricultural Technology Extension Station, Beipiao, China