Because it is vulnerable to moisture, I take sufficient waterproofing measures. It is 20g and comes in a zip-lock bag with a desiccant. I will ship it in another plastic bag. I am not able to offer any discounts, so please understand. Also, I will 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.