І dօn't remember who sаid it but іt saіɗ that "The illiterate person in the 21st century is not the one who can't read or write; but the one who is not able to unlearn and relearn. Maybe you looked into using a CRM once but found it was too expensive, or maybe you just didn't see the value in it. https://www.industrietechnik-luebke.de/wichtige-einblicke-in-die-wartung-und-reparatur-von-schnelllauftoren/