Shanghai Hengye Chemical Industry Co.,Ltd China. Its one of the largest manufacture for making molecular sieve in china. It specializes in exporting various absorbents such as Molecular Sieves3A 4A 5A 13X and insulating glass molecular sieves, activated Aluminium, Catalyst, desiccant ,Silica gel, and relevant materials at fully competitive market price with good quality. They used for air purification, oil and gas purification, refrigeration, automotive paint industry, and Paint profession .