Analyze the risk meaning , source and contents of revenue management . the key research is on the background , risk meaning ( no - show , denied board , etc . ) and risk solving methods of overbooking . at the same time , analyze the risk solution of revenue management for airline company and the practical applying research on revenue management as an example of revenue management of beijing - seoul line of korean airline 分析了收益管理的风险含义、来源和内容，重点研究了超订问题背景、风险内涵（ no - show , db等） 、风险处理手段，同时对航空公司收益管理中风险决策进行了实际应用研究，并以韩国大韩航空公司北京-汉城航线收益管理决策为例， 。
Our corporation has set up long - term cooperation with the plastic material factories at home and abroad , our main materials come from south korean chemicals co . , ltd and samsung chemicals corporation , etc . meanwhile , we sale pe and pp materials and have a 500 - ton storehouse 我公司已与国内外塑料原料生产厂家建立了长期的合作关系，主要原料来自韩国大韩油化公司sk chemicals co . ， ltd三星石油化学株等。同时经营聚乙烯聚丙烯原料的销售，并配备有500吨的库房。
