The Longkou tripod economics and trade Limited company sells the industrial used Heavy tar calcium carbonate product.

龙口三鼎经贸有限公司主营工业用重质碳酸钙产品。

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So, processing mixture of vacuum residue and ethylene heavy tar is expected to be a better route for expanding ethylene heavy tar use.

在减压渣油中掺兑乙烯重焦油，有望成为扩大乙烯重焦油利用的一种途径。

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Apply steam to heat the flushing-liquor decanter indirectly to soften the heavy tar depositing on the bottom of tank to decrease the drag of chain scraper.

用蒸汽在机械化澄清槽底部间接加热，使沉积于底部的重质焦油软化，减少刮板阻力。

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It avoided substituting Venezuelan heavy-tar oil used in Gulf Coast refineries with a similar product from near-by Canadian friends.

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Light sweet crude is depleting quickly, and now the industry is going after heavy crude and tar sands and thermally enhanced oil.

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The company is spending billions and hiring thousands to upgrade its remaining "northern tier" refineries in Indiana, Ohio and Washington state to handle a gush of heavy crude from Canada's tar sands.

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