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Lead bullion continuous refining furnace and refining process as CINF's proprietary technology popularized and applied

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Lead bullion continuous refining furnace and refining process as CINF's proprietary technology popularized and applied

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In April, 2017, lead bullion continuous refining furnace and refining process as CINF's proprietary technology is popularized and applied .CINF signs knowhow license contract to realize new breakthrough in the popularization of the proprietary technology