A harmonized standard is a European standard developed by a recognised European Standards Organisation: CEN, CENELEC, or ETSI. It is created following a request from the European Commission to one of these organisations. Manufacturers, other economic operators, or conformity assessment bodies can use harmonized standards to demonstrate that products, services, or processes comply with relevant EU legislation.The references of harmonized standards must be published in the Official Journal of the European Union.
You can find the best proper standard for your product through below link.
Read More