The pump takes, weak acid and alkali medium and so on the oil class,makes the bushing material with the perbunan;
抽汲取油类、弱酸和碱等介质,用丁氰橡套材料;
The pump takes, weak acid and alkali medium and so on the oil class,makes the bushing material with the perbunan;
抽汲取油类、弱酸和碱等介质,用丁氰橡套材料;
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