Blue silica gel desiccant beads are divided into two types: cobalt chloride-containing and silica chloride-free. The index and color rendering are the same, except that the composition content is different. Because some countries have strict restrictions on the use of cobalt chloride components. as one of the leading blue silica gel manufacturers, launched two products with different content. They can all change from blue to pink. When the color is pink, it means that the desiccant needs to be replaced again.