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| product name:Crane rail |
| specification:QU70,80,100 |
| material:U71Mn |
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| product name:Light rails |
| specification:6kg/m - 30kg/m |
| material:Q235B/55Q |
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1.The product quality which should improve?
2.which channels are you understand us through?
3.Do you satisfy to our service?
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