ETIM (European Technical Information Model) is a product classification system. The system uses equivalent groups of goods.

In each group, features are established that fully describe it, and these features are assigned corresponding values. These values can be numerical (N - length, power, voltage, ...), descriptive in the form of a list (A - color, material, shaft, ...) and logical (L - yes/no).
The layout of the product description is in 3 stages:
1. class (class)
a. Feature (feature)
I.Value (value)

Example class: EC001702 (downlight type luminaire).

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