China Plastic Tool Steel (P20/DIN 1.2311/618/GB 3Cr2Mo) in Preharden Condition, Find details about China 1.2311 Corrosion Resistance Plastic Mold Ste, Plastic Mould Steel Blocks P20 from Plastic Tool Steel (P20/DIN 1.2311/618/GB 3Cr2Mo) in Preharden Condition