Ibhulorho yentambo yesijelo yimveliso yebhulorho yezinto ezintsha, ilungele i-petroleum, ikhemikhali, indwangu, amandla ombane, oomatshini, ezothutho, ukwakhiwa koluntu kunye namanye amasimi, inokutshintsha indawo yebhulorho yentsimbi yangoku, kudala isetyenziswa kakhulu I-United States, iJapan, iJamani kunye neminye imimandla ephuhlileyo