You want to be sure, that your product is compliant with the legal regulations?
Then your organization and your staff has to be authorized and certified. The base for these are the national or international regulation, standards, directives and normative documents. For the initial verification (EC conformity assessment) to the European market you have to be compliant with the 2014/31/EC and 2014/32/EC. For some products you have to be compliant also to the European machinery directive.