EniSorb-OSB orange silica gel is a type of desiccant with humidity indicating function. After absorbing moisture, it turns from orange to green, visually indicating the relative humidity of the given environments. When being used with ordinary silica gel or drier, it indicates to which extent the drier absorbs the moisture and judges the relative humidity of a given environment. It is widely used as silica gel drier for the packing of the precision instruments, leathers, shoes, clothes, foodstuffs, medicines and household electric appliances…etc.