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Food processing machinery. Clipping machines. Safety and hygiene requirements. Original standard UNE-EN 13885-2022 in PDF full version. Additional info + preview on request

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Amendment 1 - District heating pipes. Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Design. Original standard UNE-EN 13941-1-2019 + A1-2021 in PDF full version. Additional info + preview on request

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Amendment 1 - District heating pipes. Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Installation. Original standard UNE-EN 13941-2-2019 + A1-2021 in PDF full version. Additional info + preview on request

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LPG equipment and accessories. Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG). Original standard UNE-EN 13953-2021 in PDF full version. Additional info + preview on request

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Carbonate and silicate liming materials. Determination of reactivity. Potentiometric titration method with hydrochloric acid. Original standard UNE-EN 13971-2021 in PDF full version. Additional info + preview on request

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Postal services. Quality of service. Complaints handling principles. Original standard UNE-EN 14012-2021 in PDF full version. Additional info + preview on request

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