With the crude oil quality becoming inferior and the environmental protection regulations being strict increasingly, desulphurization technology demands are higher and higher in the industry.
随着原油质量变劣和环保法规的日益严格，工业上对脱硫技术要求越来越高。
With the crude oil quality becoming inferior and the environmental protection regulations being strict increasingly, desulphurization technology demands are higher and higher in the industry.
随着原油质量变劣和环保法规的日益严格，工业上对脱硫技术要求越来越高。
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