▔▔▔▔▔▔ 01 Special Tools Steels for Molds & Tools
1.1) Hot Work Tools Steels
1.2) Cold Work Tools Steels
1.3) Plastic Mold Steels
R13X
1.4) High Speed Steels
▔▔▔▔▔▔ 02 Special Steels for Engineering Machinery
2.1) Pre-Hardened Engineering Steels