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Wireless Power Transfer - Measuring method for wireless power transfer efficiency and standby power - Mobile phone; German version 100/3555/CD:2021

Protective devices based on semiconductor technology for household and similar use - Part 1: Semiconductor Residual current operated circuit-breakers with integral Overcurrent protection for household and similar uses IEC/SC23E

Fire detection and fire alarm systems - Part 33: Components of voice alarm systems - Active loudspeakers

Respiratory protective devices - Gas cylinder valves - Part 4: Excess flow valves

Industrial systems, installations and equipment and industrial products - Structuring principles and reference designation - - Part 20: Aircraft systems

District heating and district cooling pipes - Bonded single and twin pipe systems for directly buried hot and cold water networks - Qualification testing of fitter

District heating and district cooling pipes - Bonded single and twin pipe systems for directly buried hot and cold water networks - Qualification testing of PE-Welder

District heating pipes - Factory made flexible pipe systems - Joint casing systems

Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors - Determination of the sound power level - Part 3: hybrid units

Welding consumables - Testing of welding consumables by means of weld metal specimens - Part 4: Test piece for determining the hardness of surfacing

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