কাস্টম 99.99999% উচ্চ বিশুদ্ধতা অক্সিজেন মুক্ত তামা বার

Video Description:
Discover the exceptional quality of Custom 99.99999% High Purity Oxygen Free Copper Bars by Ruiyuan. With copper content ≥99.99999% (7N) and oxygen levels below 1ppm, these bars offer superior signal transmission and low resistance. Ideal for high-tech applications, they are trusted by industry leaders like Heraeus Germany.
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