The Electronic Materials Division of FPG subsidiary Nan Ya Plastics also has a toxic sludge problem. Huang Chao-chin, an assistant manager at Sungsheng Waste Disposal, says that as one of Sungsheng's customers Nan Ya does not simply hand over this waste to Sungsheng--the company frequently sends personnel to monitor how it is being disposed of.
台塑旗下的南亞銅箔也有汙泥問題，崧聖副理黃照欽指出，南亞銅箔是他們的客戶之一，除了把汙泥交給他們之外，還經常派員監督處理情形。