Description: alphanumeric character sequence assigned to a fabricated product, which allows the date, time and circumstances of fabrication to be traced; Name: Number of fabrication
Description: alphanumeric character sequence assigned to a fabricated product, which allows the date, time and circumstances of fabrication to be traced; Name: fabrication number
Description: norm describing the material The material number is taken from this norm. Type and number of the norm with issue year and issue month must be given; Name: Reference norm material of the membrane