About SEC Shanghai Hengye Chemical Industry Co., Ltd. is one of the top manufacturers of Absorbents such as Molecular sieve, Activated Alumina, Silica Gel etc. It boasts the title of Top Three Enterprises of Dryer and Adsorbent manufacturing. The company covers 18000 square meters among which 6000 square meters are used for working shops with outstanding installations and equipments and convenient transportation as well. Products quality be...