GFS thanki ali kukana kwambiri dzimbiri ndipo chimagwiritsidwa ntchito kusunga asidi ndi soda madzi zomera mafakitale. Enamel amapopera pamwamba pa mbale yachitsulo, kenako sintering yayikulu imapangidwa kuti apange pamwamba pazitsulo zosagwira dzimbiri. Pamwamba pa enamel ndiyosalala, yonyezimira komanso yosindikizidwa ndi sealant yapadera, yoyenera pazosungira madzi mosiyanasiyana.
Ndikosavuta kukhazikitsa, kuyang'anira ndikukwaniritsa zofunikira zosiyanasiyana zamadzi.
Matanki a GFS amagwiritsidwa ntchito kwambiri pakupanga madzi m'mafakitale. Itha kunyamula madzi apadera ambiri kapena madzi, monga brine, madzi oyera, madzi osungunuka, madzi amchere, madzi osalala, madzi a RO, madzi osungunuka ndi madzi oyera.