Russian standards PDF
Low-voltage electrical installations. Part 7-715. Requirements for special installations or locations. Extra-low-voltage lighting installations
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Low-voltage electrical installations. Part 7-718. Requirements for special installations or locations. Communal facilities and workplaces
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Low-voltage electrical installations. Part 7-753. Requirements for special installations or locations. Floor and ceiling heating systems
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Implants for surgery. Metal bone screws with hexagonal drive connection, spherical under surface of head, asymmetrical thread. Dimensions
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Epoxide cellulose paper core, epoxide glass cloth surfaces copper-clad electrical insulating material laminated sheet of defined flammability (vertical burning test). Specifications
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