GS vaj tse tau dhau ISO9001-2015 thoob ntiaj teb kev tswj hwm kev tswj hwm kev ua haujlwm tau ntawv pov thawj, Class II kev tsim nyog rau kev cog lus ntawm steel qauv engineering, Class I tsim nyog rau kev tsim kho hlau (phab ntsa) tsim thiab tsim, Chav II tsim nyog rau kev tsim kho kev lag luam (tsim engineering) tsim, Class II tsim nyog rau kev tsim tshwj xeeb ntawm lub teeb steel qauv.Txhua qhov chaw ntawm lub tsev uas ua los ntawm GS vaj tse tau dhau qhov kev xeem, qhov zoo tuaj yeem ua kom ntseeg tau, txais tos koj tuaj xyuas peb lub tuam txhab
