Dear, Mr/ our company need Tylosin phosphate 276.6 mg equivalent to Tylosin 250 mg Our company name : Shifaa pharmaceutical industries please, tell me if you can export us this substance as soon as possible, we need copy from Certificate of analysis and GMP for Tylosin phosphate to know if its features suitable to our product or not. I will wait your reply very thanks for your co-operation Best wishes Dr/Shymaa Adel Show More