In the national economy industry classification, conference and exhibition service code for 7491, belonging to "other business services" category.
在国民经济行业分类中，会议及展览服务的代码为7491，归属“其它商务服务”类。
In the national economy industry classification, conference and exhibition service code for 7491, belonging to "other business services" category.
在国民经济行业分类中，会议及展览服务的代码为7491，归属“其它商务服务”类。
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