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Cross recesses for screws and wood screws. Dimensions and control methods
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Low-voltage surge protective devices. Part 31. Requirements and test methods for SPDs for photovoltaic installations
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Sports crossbows, crossbows for relaxation and bolts. Technical requirements and safety test methods
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United power system and isolated power systems. Operative-dispatch management. Switching in electrical facilities. General requirements
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Steel butt welded flanges of vessels and apparatus for gasket of octangular section. Design and dimensions
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