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Low sodium, is the use of low-pressure sodium vapor (vapor pressure of work no more than a few Pa) discharge to produce visible light, light, invented in 1930. German lighting specialist Osram (OSRAM) is an important member of Siemens Group,prada handbags 2011, the world's two major manufacturers of electric light. OSRAM lighting products in their excellent world-famous. OSRAM production through continuous improvement of low pressure sodium, low pressure sodium lamps have a luminous efficiency further improved, for a variety of electric light the most efficient light sources in the light.

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