Tel 0512-56316828 4008675858
Email sales@amateksci.com
Tel 0431-80534353 19917294565
Email et@chemextension.com
Tel 18916372613
Email yanzihan@shyuanye.com
Tel 0512-56316828 400-867-5858;400-867-5858
Email info@amateksci.com
Tel 021-4009004166/18616739031 18616739031
Email 3007523370@qq.com