Polyacrylamide (PAM) is a water-soluble polymer widely used in industries such as water treatment, petroleum extraction, papermaking, textiles, etc. It has characteristics such as flocculation, thickening, and drag reduction.

Acetic acid, with the chemical formula CH3COOH, is a common organic acid, also known as acetic acid. It is a colorless and transparent liquid with a strong acetic acid taste, and can be miscible with water, ethanol, and other substances in any proportion. Acetic acid is widely used for food seasoning, such as adding vinegar during cooking to enhance the taste of food. In addition, it also has important applications in industrial production, such as manufacturing acetate fibers, acetates, etc

Formic acid (chemical formula: HCOOH) is the simplest saturated monocarboxylic acid, named "formic acid" because it was originally extracted from ants. At room temperature, it is a colorless and transparent liquid with a strong pungent odor. It is easily soluble in water and has both carboxyl (acidic) and aldehyde (reducing) properties. Its acidity is stronger than acetic acid.