Czech technical standard (ÃÂSN) for technical, industrial and commercial standards, is a protected designation of Czech technical standards. Creation and issuance of ÃÂSN is currently provided by the Czech Standardization Agency.
ÃÂSN was also the official name of the Czechoslovak state standards (since 1951), and after 1991 the Czechoslovak standards (Czechoslovak technical standards). The successor to ÃÂSN in Slovakia is STN (Slovak Technical Standard).