2 to 5 business days
1. This product is made from 100% imported pure silica gel raw materials, 100% food grade silica gel, detected by FDA material.2. The temperature resistance of silica gel products is - 60 â - 250 â. High and low temperature resistance, wear resistance, environmental protection, innocuity, dust resistance, durability, impermeability and easy cleaning3. Natural harmless, non-toxic, tasteless, non corrosive, environmental protection