There are equipment corrosion, insufficient heavy oil processing depth, environmental pollution, lower product quality and other problems in inferior crude oil processing.
加工劣质原油存在设备腐蚀，重油加工深度不足，污染环境，降低产品质量等问题。
Heavy oil processing is a very important way to make reasonable use of petroleum resource.
重油深度加工是合理利用石油资源的重要途径。
Heavy oil processing is a very important way to make reasonable use of petroleum resource.
重油深度加工是合理利用石油资源的重要途径。
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