Conducted soil and underground water pollution investigations before leasing and purchasing land with the assistance of National Pingtung University of Science and Technology (NPUST) in order to clarify the scope of responsibilities and understand the soil and underground water situation before the shutdown of plants to ensure compliance with all relevant laws. 2013 Corporate Sustainability Report (9) Disposal of Hazardous Waste Except for lead slag from the rolling mill process, most waste chemicals of CSC come from laboratories, and the quantity is very low.