Byucksan.Co.Ltd. is a Korea-based company engaged in the manufacture of construction supplies. The Company produces five categories of products: ceiling systems, including panel-shaped insulating, panel-shaped ceiling tiles, nonflammable ceiling tiles and fire-resistant ceiling tiles; insulation systems, including glass wools, mineral wools and polystyrene foam insulations; exterior wall systems, such as prefabricated panels; floor systems, including plywood flooring boards, fiber reinforced cement panels, steel concrete panels, steel panels and wood panels, and ventilation system. It also produces paints and coatings used for construction, ships, leathers and others. As of December 31, 2011, the Company had five affiliated companies.