... can be used in Polyethylene oligomers, petroleum resin, polyethylene oxide, polyvinyl chloride (PVC), nylon (PA), polyester, phenolic ... , triphenylphosphine (TPP), caprolactam, asphalt and other organic chemical products; and sodium sulfide, ion-exchange membrane (or ... calcium chloride dihydrate , sulfur, phosphorus pentasulfide and other inorganic chemical products.Drum dryer can be used for sulfur dye ...