黄色国产精品-亚洲精品一二三四区-欧美激情视频一区二区免费-欧美一区不卡精品综合
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Silicon bismuth inoculant
Spheroidizing agent
Cored wire for spheroidization
Vermicular Agent
false
Silicon zirconium inoculant
Silicon strontium inoculant
Silicon bismuth inoculant
Silicon bismuth inoculant
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Silicon bismuth inoculant
Silicon bismuth inoculant
Features: special ferritic nodular iron castings
utility: increase the number of graphite balls and ferrite, reduce the shrinkage tendency and reduce broken graphite.
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