Because it is sensitive to moisture, I have taken sufficient waterproofing measures. It comes in a 20g zip-lock bag with desiccant. I will ship it in another plastic bag. I am not able to offer any discounts, so please refrain from asking. I will also not respond to inquiries about discounts. I will respond to other inquiries as quickly as possible. However, I cannot answer questions about its use due to circumstances. Please search online for "aluminum chloride [用途]" (aluminum chloride [usage]) to find out more. Especially for those who wish to have it mailed: Because the exact (abbreviated) address is listed, there have been cases where the product has not been delivered. Also, the post office will not deliver to those who have not responded to the post office's confirmation of residence. I will definitely ship the item, but I cannot be held responsible if it is not delivered, so please understand.