Silica gel has strong moisture absorption capacity, so it should be stored in a dry place, and there should be a shelf between the packaging and the ground.

Silica gel is divided into: coarse-pore silica gel, B-type silica gel, fine-pore silica gel according to its pore size. Due to the different pore structures

Specific surface: refers to the surface area per gram of silica gel, including the sum of the internal micropore surface area and the external surface area