Tel 0571-88211921
Email sales1@gotopbio.com
Tel 821-50328103-801 18930552037
Email 3bsc@sina.com
Tel 21-61263452 13641803416
Email ymbetter@glbiochem.com
Tel 17705183659
Email sales@njleonbiotech.com
Tel 025-025-58361106-805-805 13082558573
Email liugang@njpeptide.com