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Reply:This differs from NDT 'Certification' under International Standard ISO 9712 and European Standard EN473 where certification is issued only by an independent 3rd party with no connection to either the individual or to his employer. Employers issue only 'qualification'.Rick V 1 Airco Heliwelder 3A/DDR3 CTC 70/90 amp Stick/Tig Inverters in Parallel1 Lincoln MIG PAK 151 Oxy-Acet
发表于 2021-8-31 23:40:51