State-owned petroleum companies are facing difficulties brought on by a bearish market and the narrow margin between producer and market prices.

国有石油公司目前主要面临市场疲软和进销差率小所带来的困难。

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State-owned petroleum companies are facing difficulties brought on by a bearish market and the narrow margin between producer and market prices.

国有石油公司目前主要面临市场疲软和进销差率小所带来的困难。

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