Ukwakhiwa kwesakhiwo Ukunganyangeki kweKhemikhali Umbane & Nge-elektroniki Ukhuseleko lwamandla kunye nokukhusela kwendalo Iziseko zophuhliso Isikrweqe kunye ne-crafts Ezemidlalo kunye nokuzonwabisa Into evikela amanzi Ukuthutha I-biomedical