닦는 성미 Rwma 종류 4 베릴륨 구리 합금 Astm 표준 밝은

Video Description:
Discover the high-performance Tempers RWMA Class 4 Beryllium Copper Alloys, ASTM Standard Bright Polished. Ideal for electrical and industrial applications, these alloys offer exceptional strength, conductivity, and corrosion resistance. Perfect for springs, connectors, and drilling tools.