2399| 9
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我們的水壓試驗(yàn)設(shè)備,,用地下水,,經(jīng)常出現(xiàn)閥體生銹 |
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點(diǎn)評(píng)
那是不銹鐵,,304的不可能生銹
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點(diǎn)評(píng)
高壓的沒(méi)有塑料的,,你需要多大壓力?可否考慮 美國(guó)高壓閥
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