SS stands for Swedish standard, EN for European standard, ISO and IEC for international standard.
SS-EN och SS-ISO indicate that a European EN-standard or an international ISO-standard has been implemented as a Swedish standard.
Example:
Standards describe agreed upon requirements and specifications that aim to create uniform routines and designs within a certain area. Standards can cover a number of areas, for example technology, industry, environment, and quality, and they can apply to everything from product safety and compatibility to quality levels in different processes.
