Oil waste
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Treatment of oil waste, such as lubricant residues, by means of refining, processing, purifying etc.
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2710
Petroleum oils and oils obtained from bituminous minerals (excl. crude); preparations containing >= 70% by weight of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations, n.e.s.; waste oils containing mainly petroleum or bituminous minerals
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