Cov teeb meem zoo ntawm cov txheej txheem khoom siv hluav taws xob suav rau 80% ntawm tag nrho cov khoom siv hluav taws xob uas paub tab.Nyob rau tib lub sijhawm, cov txheej txheem tsis zoo tuaj yeem ua rau cov khoom lag luam tsis ua haujlwm, thiab txawm tias qhov txawv txav ntawm tag nrho cov kab ke, ua rau cov khoom siv rov qab los, ua rau cov khoom lag luam poob loj, thiab ua rau muaj kev hem thawj rau lub neej ntawm cov neeg caij tsheb.
Nrog ntau tshaj 10 xyoo ntawm kev paub txog kev ua tsis tiav, GRGT muaj lub peev xwm los muab cov tsheb thiab hluav taws xob PCB pawg thawj coj saib xyuas cov txheej txheem zoo, suav nrog VW80000 series, ES90000 series thiab lwm yam, pab cov tuam txhab nrhiav cov khoom tsis zoo thiab kev tswj xyuas cov khoom lag luam zoo.