C/TPAs normally carry out administrative tasks concerning the Procedure from the companies’ drug and Liquor tests systems. This could contain groups of companies joining with each other being a consortium for participation in a random testing system. the signature inside the certificate) you should use any library that parses X.509 https://allgemeingeltungsbereich.de/arbeitgeber-der-zukunft-die-zukunft-der-arbeit-gestalten/