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Optical fibre cables. Microduct technology. Guidance. Original standard PD IEC TR 63431-2025 in PDF full version. Additional info + preview on request

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Radio-frequency connectors - Electrical test methods. Uncertainty specification of frequency domain test for insertion loss. Original standard PD IEC TS 61169-1-7-2025 in PDF full version. Additional info + preview on request

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Renewable energy off-grid systems - Generators. Integration of solar with other forms of power generation within hybrid power systems. Original standard PD IEC TS 62257-301-2025 in PDF full version. Additional info + preview on request

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Nanomanufacturing. Key control characteristics - Electromagnetic compatibility. Shielding effectiveness of nanomaterials: near-field probe method. Original standard PD IEC TS 62607-11-1-2025 in PDF full version. Additional info + preview on request

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UHV AC transmission systems - Security and stability requirements for system planning and design. Original standard PD IEC TS 63042-103-2025 in PDF full version. Additional info + preview on request

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Information technology. Artificial intelligence. Beneficial AI systems. Original standard PD ISO IEC TR 21221-2025 in PDF full version. Additional info + preview on request

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