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