The carbon steel sheet price in United State middle west area have decreased about US$35 to 45 per short ton in the past month. The price of carbon steel sheet has dropped about US$100 per short ton since this July, which means the steel sheet market in North America is facing to the pressure on price breakdown. The demand is extremely weak with coming winter. The stock was totaled 11.2 million tons in US and Canada coil center in October, this is the new high record.