There are only one regular and one specific sign in Netherland.

Source: https://www.government.nl

DGSA, ADR , IMDG , ICAO, IATA, Dangerous Goods Safety Adviser , Hazload , Audit , Analysis , Training DGSA, ADR , IMDG , ICAO, IATA, Dangerous Goods Safety Adviser , Hazload , Audit , Analysis , Training ADR , IMDG , ICAO, IATA, Dangerous Goods Safety Adviser , Hazload , Tachograph , Analysis , DGSA , 561/2006 , AETR , Training