Because of government rigid environment policy, raw material of silica gel is short of supplyment for quite long time since last year.
Recently, the situation has become worse, price of raw material increased every week, and more and more difficult to get enough raw material. The supply of silica gel will become very limited nowadays.
Under such circumstance, it is a trend that end-customers to consider to use other subsitute: Activated Clay Desiccant.