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近年来,我国己内酰胺产量增长较快,但仍然不能满足化学纤维工业发展的需求。随着合成纤维工业迅速发展,我国己内酰胺消
In recent years, China’s caprolactam production increased rapidly, but still can not meet the needs of the development of chemical fiber industry. With the rapid development of synthetic fiber industry, China caprolactam consumption