This classification covers equipment, materials, and measuring instruments for soil contamination prevention, countermeasures, and remediation in manufacturing plants and industrial facilities. It includes product groups aimed at preventing chemical substance leakage, purifying contaminated soil, monitoring and measuring soil quality, and ensuring compliance with environmental standards. Applicable products include oil-water separators, soil conditioners, groundwater purification systems, soil contamination survey equipment, waterproof sheets, and adsorbent materials, supporting compliance with environmental regulations and sustainable manufacturing activities.