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Building hardware. Mechanically operated locks and locking plates. Characteristics and test methods. Original standard UNE-EN 12209-2025 in PDF full version. Additional info + preview on request

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Wastewater treatment plants - Control and automation. Original standard UNE-EN 12255-12-2024 in PDF full version. Additional info + preview on request

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Wastewater treatment plants - Preliminary treatment. Original standard UNE-EN 12255-3-2024 in PDF full version. Additional info + preview on request

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Wastewater treatment plants - Lagooning processes. Original standard UNE-EN 12255-5-2024 in PDF full version. Additional info + preview on request

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Fixed firefighting systems. Components for sprinkler and water spray systems. Spray pattern sprinklers with a k-factor of at least K160, extended coverage sprinklers of at least K80 and control mode special application sprinklers. Original standard UNE-EN 12259-15-2025 in PDF full version. Additional info + preview on request

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Gas meters .Turbine gas meters. Original standard UNE-EN 12261-2024 in PDF full version. Additional info + preview on request

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