This category handles specialized surface treatment equipment other than plating, coating, and polishing equipment. It includes professional surface modification and improvement equipment such as anodizing equipment, chemical conversion treatment equipment, blast equipment, barrel polishing machines, electropolishing equipment, PVD/CVD coating equipment, plasma treatment equipment, laser surface modification equipment, shot peening equipment, and heat treatment furnaces. This equipment group corresponds to various surface treatment technologies aimed at improving corrosion resistance, hardness enhancement, adhesion improvement, and appearance quality of metal parts, providing high-performance surface treatment systems used in manufacturing industries such as automotive, aerospace, electronic components, and precision machinery.