Peb pab neeg no muaj xws li cov ntxhia ua engineers thiab mechanical engineers, nruab nrog superb lub chaw soj nstuam, peb tuaj yeem ua qhov kev sim thiab kev tshawb fawb ntawm cov txheej txheem thev naus laus zis ntawm cov ntxhia ua cov nroj tsuag, suav nrog ore beneficiability test, pilot test;Cov ntxhia hauv cov ntxhia hauv qib ntsuas suav nrog Pb, Zn, Fe, Cu, Li, S, P tsom xam, thiab lwm yam.