Description: Region, zone or union for which the specified customs tariff number is applicable in terms of content and structure; Name: Customs Tariff Number Region
Description: Region, zone or union for which the declared tariff number is applicable in terms of content and structure; Name: Region of customs tariff number
Description: head observed at outlet area of the installation, corresponding to the sum of the height, pressure head and velocity head; Name: total head at outlet area of the installation