There is a uniform formula for unit consumption: unit consumption = export of finished products * (1 - loss rate) / export of finished products.

Here only need to know the rate of consumption can be calculated loss rate. If you do not know neither the loss nor know the unit of consumption, it can only be decided according to the production process, loss refers to the production of a unit of export finished products produced by the trimmings and waste. Unit consumption refers to the production of a unit of exported finished products occupied by the imported material.

Expanded Information:

Standard Setting:

The basis for the development of standards for unit consumption: State Council [1999] No. 35, Article VIII of the document "... ... by the General Administration of Customs, the State Economic and Trade Commission, in conjunction with the relevant State Administration of Industry to develop and publish in batches of nationally uniform unit consumption of imported goods processing trade quota standards, as the basis for approval, supervision and write-off of the number of imported materials." And Article 33 of the Customs Law "The number of manufactured goods for processing trade shall be authorized by the Customs in accordance with relevant regulations."

And "Customs Law" Article 33 "interpretation of legal provisions" in the relevant interpretation "...... Customs or subordinate Customs in the national unified standard of unit consumption, in order to standardize the management of processing trade in the Customs area, according to the actual development of the Customs area is only applicable to the Customs area of the unit consumption of the standard as a necessary supplement to the national unified standard standards as a necessary supplement to the national unified standards."

Baidu Encyclopedia - Unit Consumption