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coal tar asphalt
Selling leads
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... tar pitch is an amorphous residue produced by the distillation or heat treatment of coal tar, which is a by-product of coal when it is carbonized ...
2024-12-09 18:23:38
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...an amorphous residue produced by the distillation or heat treatment of coal tar, which is a by-product of coal when it is carbonized to make coke. ...
2024-12-09 18:23:38
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