Since 2008, November 11 is the International Day of Energy Saving

Since 2008, November 11 is the International Day of Energy Saving Since 2008, November 11 is the International Day of Energy Saving Since 2008, November 11 is the International Day of Energy Saving Since 2008, November 11 is the International Day of Energy Saving Since 2008, November 11 is the International Day of Energy Saving