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coal tar pitch roof repair
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...: Coal Science and Technology (first-grade subject); Coal Utilization and Processing (Second grade subject); Coal reversion (third grade subject). ...
2024-12-09 18:23:38
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.... Application courses: Coal Science and Technology (first-grade subject); Coal Utilization and Processing (Second grade subject); Coal reversion ...
2024-12-09 18:23:38
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...Coal Tar Pitch China Biggest Supplier Softening Point 80-90 Application: This grade can be used as raw material for pitch coke ;making electrode ...
2024-12-09 18:23:38
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... Coal Tar Pitch Softening Point: 95-120 Definition: the pitch obtained from deep process of coal tar or general coal pitch. Application courses: ...
2024-12-09 18:23:38
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