巴基斯坦采购需求：L-硒蛋氨酸、硫酸铜、硫酸锰、DMPT二甲基-β-丙酸噻吩、甘氨酸螯合物系列、氨基酸系列

I'm interested in your Copper Sulphate and would appreciate it if you could provide me with the Certificate of Analysis (COA) to ensure quality compliance. Additionally, please send over some photos of the material and the packaging, as it's crucial for our evaluation. Furthermore, could you share the cost and freight (C&F) price to Karachi, Pakistan? This will help us assess the total expenditure and make a prompt decision. Looking forward to your detailed response, including all requested documents and information!