Shanghai Hengye Chemical Industry Co., Ltd. Which is one of the top manufacturers of Absorbents, Molecular sieve,Alumina. Products One,Molecular Sieve Type A Molecular Sieve 3AMolecular Sieve 3A EPG Activated Power 3AMolecular Sieve 4AMolecular Sieve 4A DGActivated Power 4AMolecular Sieve 5AActivated Power 5A Two,Molecular Sieve Type X Activated Power Molecular Sieve 10X Molecular Sieve 13X APG ...