This standard specification deals with quality control requirements for p-Xylene feedstock. Emphasis is given to minimum weight percentage of Xylene, maximum content of ethylbenzene, toluene, maximum content of aromatics of C9 and higher boiling point, and Miscellaneous impurities such as nitrogen and sulfur. By specifying these standards, the specification ensures the purity and suitability of Xylene to meet the high standards required in industrial production. Standards are developed according to internationalization principles to guarantee conformity of product mass.