... required factors for revival are temperature and pressure. Introduction of Molecular Sieve 4A Molecular Sieve type 4A (Angstrom) is ... , CH3OH, C2H5OH, CH3CN2, CS2, CH3CL, CH3Br, and carbon dioxide.Deep drying of air, natural gas, alkane and refrigerant. Generation and purification ... iron drum. As requirement of consumers. Attention:Do not unpack the goods until using, avoid of exposure in air for a ...