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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
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Smart Farming Standards and specifications are drivers for the digitalization of agriculture
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Publications of NA 044-00-01 AA

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ISO 5149-1	2014-04	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Definitions, classification and selection criteria More	Order from DIN Media
ISO 5149-1 AMD 1	2015-10	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Definitions, classification and selection criteria - Amendment 1: Correction of QLAV, QLMV More	Order from DIN Media
ISO 5149-1 AMD 2	2021-01	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Definitions, classification and selection criteria - Amendment 2: Update of Annex A and the refrigerant tables More	Order from DIN Media
ISO 5149-2	2014-04	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction, testing, marking and documentation More	Order from DIN Media
ISO 5149-2 AMD 1	2020-06	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction, testing, marking and documentation More	Order from DIN Media
ISO 5149-3	2014-04	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site More	Order from DIN Media
ISO 5149-3 AMD 1	2021-03	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 3: Installation site - Amendment 1: Update of the requirements for machinery rooms and emergency mechanical ventilation More	Order from DIN Media
ISO 5149-4	2022-11	Standards	Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recovery More	Order from DIN Media
ISO 13971	2012-09	Standards	Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification More	Order from DIN Media
ISO 14903	2025-01	Standards	Refrigerating systems and heat pumps - Qualification of tightness of components and joints More	Order from DIN Media

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