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长期以来,我国锦纶工业上下游发展不平衡,锦纶原料特别是己内酰胺工业发展严重滞后于聚合和纺丝,已经成为我国锦纶工业发展
For a long time, the unbalanced development of upstream and downstream of nylon industry in our country, nylon raw material, especially caprolactam industrial development seriously lag behind polymerization and spinning, has become China's nylon industry development