Unit value and volume indices of the international trade in goods Survey on international trade in goods by countries and industries International trade in goods by enterprise types

This page lists the Unit of Measurement codes that are used for international trade. These descriptions are used in the purchase card records.

List of Measurement Unit Codes and its description which can be provided in the qty_um field while POST Customs Shipment. POST Customs shipment API: POST/v2/customs/shipments

The units of measure offered herein are provided to the user for the representation of physical quantities currently employed in international or regional trade. This collection of units does not

nar (Net As Received) 表示煤炭按照所收到的状态进行计量，包括煤 炭本身的质量和水分的质量；gcv (Gross CaLeabharlann Baiduorific Value) 表示煤 炭的体积热值，即煤炭在完全燃烧时所释放的热量。

The ‘measurement unit code’ field in the ‘measure component’ table shows the unit the trader has to submit on their declaration form. ‘NAR’ means ‘number of items’. The ‘measurement unit qualifier code’ field is usually null, but may be used to qualify the primary unit.

To simplify for users SFTI has compiled a list of codes – some 80 entries, all in all – representing the most commonly used units of measure and package types. The shortlist, attached below, is to support quantities ordered, delivered and invoiced, while codes for the description of article characteristics have not been prioritised.

A recommended standard unit of quantity is specified for each Harmonized System 6-digit subheading; other units of quantity may be retained or used in statistical nomenclatures for collecting international trade data and for other international purposes.

The measurement units that are commonly used are Number of Articles (NAR), which are also referred to as: ‘p/s’ for items in French or German, or ‘heads’ in reference to livestock

ix. Net Assimilation Rate (NAR) The term, NAR was used by Williams (1946). NAR is defined as dry matter increment per unit leaf area or per unit leaf dry weight per unit of time. The NAR is a measure of the average photosynthetic efficiency of leaves in a crop community. (W 2 –W 1) (log e L 2 - log e L 1) NAR = x (t 2 – t