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Polyurethane material for water plugging in coal mine YK-521 (two
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Polyurethane material for water plugging in coal mine YK-521 (two-component)
YK-521 is a double-liquid grouting material, which can penetrate into the deep microscopic fractures of the rock formation, and can effectively strengthen the broken surrounding rock and coal seam in the watery environment.
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Xinhai Industrial Park, Wudi County, Binzhou City, Shandong Province, China
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