Liyi Kehan Silicon Products Co., Ltd is a high-tech enterprise which is recognized by Shangdong Science and Technology Department, which intergrates scientific research, manufacture and sales as a whole. It invested 50million RMB to establish Silica solenterprise with annual production capacity of more 60000 tons and storage capacity of more than 70000 tons. It has became the largest silica sol production base in northern China, and is also the only manufacturer of silica sol producted by two processes with silicon hydrolysis and ion exchange method.