5.Charateristics of Hot Work Tool Steel:  a. Hot work steel with dry hardening,have upper hot   intensity and rigidity, under middle pemperature,
b. Have good tenacity
c. Hot tirdness nature and definite wearable empty quench under lower Ao shi ti temperature condition, small distortion after heat treatment and so on.
d .Good toughness by ESR treatment
e. Good resistance to high temperature with excellent cutting and  polishing nature   to ensure its long usage
f. Wearing resistance in mesothermal conditions
g. Resistance for erosive attack

7.For making all sorts of cold working steel with high-precision and long-life .Some cutting tools and measures.