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Dear Supplier! Thank you for your offer. I would like to proceed with the first order of 40 vials of NAD+ (500 mg) as a sample batch for testing and evaluation purposes. Please confirm the total price, shipping cost, and estimated delivery time to Hungary (EU). I kindly ask that the shipment is labeled as: “Vitamin Solution – For Lab Use Only – Not for Sale” (This is important for customs clearance in our country.) Please also include the following documents in the package or via email: Certificate of Analysis (COA) Material Safety Data Sheet (MSDS) Product specification sheet (if available) Invoice (for customs declaration) Once I receive the package, we will submit the samples to a certified EU laboratory for testing. If everything meets expectations, we plan to move forward with larger orders and a long-term partnership. Thank you again and looking forward to your confirmation. Best regards, Bogoly Bianca