what is a sulfur
Kian Petroleum Company is an international specialized petrochemical company producing various petroleum products such as diesel , a sulfur, etc A Sulfur Sulfur (in British English, sulphur) is a chemical element with the symbol S and atomic number ۱۶. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula . Elemental sulfur is a bright yellow, crystalline solid at room temperature […]