1. Shandong Agriculture and Engineering University,Jinan,Shandong,China
2. Shandong Aohang and Niu Pastoral Industry Co., Ltd,Zibo,Shandong,China
3. Shangdu Hengchang Co., Ltd,Heze,Shandong,China
4. Hunan Tianhua Industrial Co., Ltd,Lianyuan,Hunan,China