Surface treatment chemicals are specialized compounds used to modify the surface properties of materials such as metals, plastics, or glass without altering their core structure. These chemicals enhance characteristics like corrosion resistance, adhesion, wear resistance, and appearance by cleaning, coating, or preparing surfaces for further processing (e.g., painting, plating, or bonding). They play a critical role in industries such as automotive, aerospace, electronics, construction, and manufacturing to improve both the performance and longevity of finished products.