The production activities of this product are based on a weighted average of 'Free fatty acids, animal fat oil', 'Free fatty acid, sedimentation, waste edible oil, 'Free fatty acid, high-temperature cooking, waste edible oil', and 'Free fatty acid, vegetable oil'. If the specific production process of free fatty acids is not clearly defined, this dataset can be used. For detailed technical descriptions, system boundaries, and related information, please refer to the respective datasets for different production methods of free fatty acids. Infrastructure such as manufacturing of production equipment and construction of facilities are not included within the system boundary of this dataset.