These premium high-carbon steel strips (65Mn: 0.62-0.70%C, CK67: 0.65-0.73%C) deliver exceptional strength (980-1770MPa tensile), hardness (≤150HBW), and wear resistance. Optimized for spring-making, precision tools, and mechanical components, they feature excellent elasticity, fatigue resistance, and dimensional stability. Surface-polished to mirror finish, they ensure minimal friction and enhanced aesthetics. Compliant with global standards, these grades offer cost-effective performance for automotive, industrial, and consumer applications, balancing durability, machinability, and value for demanding engineering needs.