Ngolwazi olungaphezu kweminyaka engu-20, siyingcweti ekuhlinzekeni ngezinsizakalo zamakhemikhali ezisezingeni eliphezulu. Ukuzibophezela kwethu ekuqiniseni nasekuqambeni izinto ezintsha kuqinisekisa ukuthi sihlangabezana nezidingo ezahlukahlukene zamakhasimende ethu emikhakheni ehlukahlukene. Sethembe ngezixazululo zamakhemikhali ezingathenjwa futhi eziphumelelayo.