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ISO
Abbreviation for International Organization for Standardization
In short and in plain language
ISO is a group for many countries that sets out standards.
The standards cover goods, services and ways of work. Many of them are also used in Germany.
In building work and on green labels, they set out what is needed. Quotes can point to them.
Definition
ISO is an international organisation that publishes standards for products, services and processes. Many ISO standards are also adopted in Germany as DIN EN ISO standards. In construction and environmental labelling they set out requirements that quotes can refer to.