Zvigadzirwa zveDefu zvinotora zvitupa zvepasirese zvemhando yepamusoro certification, kuchengetedzwa kwemamiriro ekunze system, occupational health management system, kuitira kuti vatengi vave nemhando yepamusoro uye vimbiso yekuchengeteka mukushandiswa kwezvigadzirwa.
Muna 2010, yakapasa iyo yemhando system certification yeGerman Rhine TUV TS16949:2009.
Muna 2014, yakapfuura iyo Guangdong zhongjian GB/t28001-2011 / ohsas18001-2007 hutano hwebasa uye kuchengetedza manejimendi.
Muna 2014, kambani yakapfuura Guangdong zhongjian GB/t24001-2004 / iso14001-2004 kuchengetedzwa kwezvakatipoteredza kuchengetedza system certification.