Harbin Sidiou Commerce And Trade Co., Ltd. was established in 1993. We are the biggest trader of galvanized steel coil/sheet, galvalume steel coil/sheet and pre-painted steel coil/sheet in the Northeast of China. Our company has been ranked the first in this industry for continuous five years. And in 2007, we became the only firm who is the agent of eight China biggest steel mills in the northeast of China. We can fulfill the requirements of different clients by cooperating with these steel mills in exchanging preponderant steel resources.