English name: Colistin sulfate CAS No. :1264-72-8 Packing: 10kg / barrel Specification: 19000u/mg Package:10kg / barrel Standard:19000u/mg content Antibiotic anti-infective drug How to proceed your orders: 1. Please let me know the items you are favorable, assay,quantities, and the destination country. 2. You confirm all details, and offer us purchasing order; 3. We send the detail information contain the quality and price of our product and offer the suitable shipping method for reference. 4. You confirm the order and pay money 100% in advance and send us the detailed contacting information, including contacting person/company, address, mobile number,ZIP code and your special requirements. 5. We arrange the shipment according to your requirements, and tracking code will be offered after claiming the payment within 24h, then you can track your parcel at any moment. 6. We offer after-sales service after you receive parcel