Ibicuruzwa bya Defu byemeza ibyemezo mpuzamahanga byubuziranenge byemewe, ibyemezo bya sisitemu yo gucunga ibidukikije, sisitemu yo gucunga ubuzima bwakazi, kugirango abakiriya bagire ireme ryiza n’umutekano mukoresha ibicuruzwa.
Muri 2010, yatsinze impamyabumenyi yubuziranenge ya German Rhine TUV TS16949: 2009
Muri 2014, yatsinze Guangdong zhongjian GB / t28001-2011 / ohsas18001-2007 gucunga ubuzima n’umutekano ku kazi
Muri 2014, isosiyete yatsinze Guangdong zhongjian GB / t24001-2004 / iso14001-2004 icyemezo cya sisitemu yo gucunga umutekano w’ibidukikije