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Connecting devices for low-voltage circuits for household and similar purposes. Part 2-3. Particular requirements for connecting devices as separate entities with insulation-piercing clamping units
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Internal buildings and structures utilities. Installation of ventilation systems of residential buildings. Regulation and monitoring of work
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Fire retardant compositions for steel constructions. General requirement. Method for determining fire retardant efficiency
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SSI. Electrical analogue instruments and devices of automatization. General specification
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