Isitezi sethu esisha se-SPC esinongqimba oluhlanganisiwe lwegwebu le-polymer sichaza kabusha ukunethezeka nokuthula. Uma kuqhathaniswa ne-SPC yendabuko, inciphisa ngempumelelo umthelela nomsindo wokuhamba, idale indawo ethulile futhi enokuthula. Ngesikhathi esifanayo, ukuzizwa okuthambile okungaphansi kwezinyawo kunikeza induduzo eyengeziwe yokuphila kwansuku zonke. Ilungele imindeni, amafulethi, nezindawo zokuthengisa ezidinga kokubili isitayela nokuthula.