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| модулируемая горелка (Modulating burners are designed to control the burner output to match the boilers' variable load requirements to ensure maximum combustion and boiler efficiencies during large heating demands. CrazySnail) | |||
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| модулируемая горелка (Modulating burners are designed to control the burner output to match the boilers' variable load requirements to ensure maximum combustion and boiler efficiencies during large heating demands. CrazySnail) | |||