ESO ke polasetiki e thusang, e hlahisitsoeng hantle ka thepa ea tlhaho ea boleng bo holimo 'me e fetile liteko tsa chefo tsa Setsi sa Taolo ea Mafu, Tsamaiso ea Lijo le Lithethefatsi ea Shanghai le SGS.
Likopo
Lihlahisoa tsohle tsa PVC, joalo ka lifilimi tsa PVC, matlalo, thapo le lithapo, lintho tsa ho bapala, lipeipi, jj. ESO le eona e ka sebelisoa ho PCB ho nkela oli ea tung sebaka.