When the Liguang Changhua Plant in Taiwan inspected the groundwater quality by itself in 2002, it found that the concentration of volatile organic compounds contained in the groundwater was suspected to exceed the standard, and immediately organized a pollution improvement project team, and conducted site investigation and remediation engineering operations. In 2010, in accordance with the "Soil and Groundwater Pollution Remediation Law", it was announced as a soil and groundwater pollution control site. The company's environmental team started in 2008, joined the implementation of the pollution site improvement plan, cooperated with the site's many thorough and systematic investigations, and carried out remediation projects according to environmental regulations and patented laws; The removal of the structure, the excavation of the soil with the verification of the soil, the heavy metal in the local area of the site, the deep excavation and sub-packaging of the TPH-contaminated soil, and the low-temperature heat treatment of the VOC-exposed contaminated soil are carried out to remove the pollution source in order to restore the goal of sustainable land management.