Type MG will harden like a brick after being absorbed. So we don't need to worry about water leakage after saturation adsorption. We pack it with a single layer of special packing material. In addition, reducing the water vapor transmission rate (WVTR) of the packaging material can make our MG type desiccant absorb slowly and long-term for 2~3 years). This is a very special long-lasting desiccant that is widely used in automotive lighting systems to avoid internal fogging.