Longmay Group integrated some business patterns since its incorporation in 2005, since when the marketing of coal products have been directly handled by the group.
龙煤集团在2005年成立后整合了部分业务模式,直接负责煤炭产品的销售任务。
参考来源 - 煤炭销售系统的研究与设计·2,447,543篇论文数据，部分数据来源于NoteExpress
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