Gidaje na GS sun wuce takardar shaidar tsarin kula da inganci na duniya ta ISO9001-2015, takardar shaidar Class II don kwangilar ƙwararru na injiniyan tsarin ƙarfe, takardar shaidar Class I don ƙirar ƙarfe (bango) gini da gini, takardar shaidar Class II don ƙirar masana'antar gini (injiniyar gini), takardar shaidar Class II don ƙira ta musamman ta tsarin ƙarfe mai sauƙi. Duk sassan gidajen da aka yi da gidajen GS sun ci jarrabawar ƙwararru, ana iya tabbatar da ingancinsu, barka da zuwa ziyartar kamfaninmu.
