Hydrochloric acid is an aqueous solution of hydrogen chloride and is one of the important raw materials in the chemical industry, widely used in chemical, metallurgical, pharmaceutical, and other industries. The production activities of this product are based on a weighted average of 'Hydrochloric acid, direct synthesis method' and 'Potassium sulfate, Mannheim process'. If the specific production process of petrol cannot be clearly defined, this dataset may be used. Detailed technical descriptions, system boundaries, and related information can be referenced from various hydrochloric acid production datasets. Infrastructure such as production equipment manufacturing and factory construction is not included within the dataset boundary.