Qingdao Chengyu Chemical Co.,Ltd. was founded as Qingdao Ocean Chemical Group Laoshan No.2 Factory in 1989. At present, Chengyu is a large-scale silica gel serial products manufacturer in China, with annual output of 10,000 tons (20% of total output of China), leading equipment, excellent producing method and I/E license. Our products now are well-received in EU, Japan and Australia; meanwhile, our "chengyu"serial silica gel products enjoy good reputation in the international market.