
Defon has successively passed management system certifications such as S09001, IS014001, ISO45001, as well as factory certifications from various classification societies such as CCS, GL, LR, ABS, BV, NK, DNV, KR, RINA, etc.
At the same time, we have obtained qualifications for A2 level low-pressure vessel design, A2 level high-pressure vessel manufacturing, as well as multiple domestic and international pressure vessel design and manufacturing qualifications such as ASME, PED, KGS, CU-TR, DOSH, MOM, etc.