... super saddles' smooth surface imparts a high chemical resistance and provides them with a high level ... used in petrochemical, acid, natural gas, aqueous cleaning, fine chemical, environmental protection, pharmaceutical, fertilizer, and metallurgical plants where ... drying, filter, absorbing, cooling, washing, and recovering.Chemical Composition: SiO2Al2O3SiO2+Al2O3Fe2O3CaOMgOK2O+Na2OOther>69%15-23%>92%< ...