關於「Dnv certificate database」標籤，搜尋引擎有相關的訊息討論：

DNV - Find a valid certificatecertificatechecker.dnv.comCertification Authentication - DNVwww.dnv.com › MaritimeDNV - Nexans in Belgiumwww.nexans.be › Building-Territories › Power-AccessoriesDNV-GL certifcate Certificate | Schneider Electricwww.se.com › document › C_MA_DNV-GL_C