l. streets of st petersburg aside from being a happy homecoming the l.e.d. assembly line launches a big step in russia's attempts to modernize its economy to go green at the same time. the capacity of an infection is the highest or inodes of business today in russia countries and in eastern europe we can produce producing community. two months. it's. a levy is the latest in a long line russians big and powerful made some of the first strides in constructing incandescent lamps in the eighteen seventy s using carbon filaments renowned american inventor thomas edison introduced improved filaments and extended relatively short life of electric bulbs first to forty then to over one thousand hours by the early twentieth century and tungsten filament light bulbs still in use today were already emerging fluorescent lamps appeared in the thirties college and lamps at the end of the one nine hundred fifty s. and high pressure sodium street lighting in the sixty's compact fluorescents or c.f.l. some were pioneers in the seventies and are still a popular option as we mov