Dear Sir, We are very interested in API's Aspoxicillin Trihydrate,CAS No.: 63358-49-6 . We will book it 1kg. If you can offer, please us. Best regards, Ms Sally Hainan Shunyuan Chemtech. Co.,Ltd. Add: Rm.1303, North Gate ,No.C Building, Fuhao Building , No.16 , Yusha Road,Guomao 570125, Haikou, Hainan China.Tel: 8 fax:8Web: www.shunyuan88.com