An investigation has been carried out on the CSP low carbon steel after cold-rolling and annealing of the same thin slab was investigated by chemical phase analysis and SAXS method that as well as high resolution TEM analysis. It was found that the amount of nano-scaled MC particles is less than that of nano-scaled M3C particles by 160 times after the annealing, reduces is 26 times under two conditions, its grain-size distribution frequency highest is the 10~18nm size. But in the annealing process, the particles accumulated to grow up. Further analysis also indicated that particles distribution uniformity of cold-rolling is better than that of annealing condition. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.