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coal tar asphalt
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Hard coal tar pitch factory Technical Parameter Application: It is widely used as blast furnace iron ditch material, blast furnace gunning ...
2024-12-09 18:23:38
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India coal tar pitch export to india larger quantity (Hard pitch) Item Standard 1# 2# Softening point (℃) 95-100 95-120 Toluene insoluble TI(%) 24 ...
2024-12-09 18:23:38
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