Isitofu esibomvu/esibomvu
a. Izinhlobo zezitayela zekhemikhali kanye nezitayela zomhlaba wezitayela zekhemikhali
b. Isimo sokwenza: ① ukungena kwezinkampani yokubomvu
② ukubomvu kwekheya elide
③ Umphumela kanye nokufaka umbala omhlophe
④ ukungena kwezinkampani yokudyezela
c. Ukupakisha okwenzelwe: ① Ukuhambisa (ukugqoka futhi ukugqoka ngamahora)
② Ukuthengiswa kwendawo (ukugqoka ngokuphambene noma ukugqoka ngokubhalwe)