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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2012
Inventories by Major Categories

Inventories by major categories are summarized as follows:

  As of December 31, 
  2012  2011 
Raw materials $12,906,713  $9,371,850 
Work in progress  419,695   556,816 
CCA and copper wire  2,947,584   2,925,769 
Copper rod and anode  1,570,413   2,647,811 
  $17,844,405  $15,502,246