standard: astm b265,  astm f67,  astm f136,  ams 4902,  ams 4911 grade: gr. 1,  gr. 2,  gr. 3,  gr. 4,  gr. 5,  gr. 7,  gr. 9,  gr.12,  gr. 23,  ti-15333    ....
Selenium-Free Manganese Metal Optimize Your Steel Production with Pure Manganese Our Selenium-Free Manganese Metal is produced through a meticulous refining process to ensure the highest purity levels. By eliminating selenium, we provide a safer and...
The microcrystalline zinc photoengraving plate is with the photosensitive emulsion  in front and orange paint in back. Under the guidance of Japan and other experts, the first Chinese domestic production of microcrystalline zinc plate for precoated...
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