说明：北京燃气投资行业相关产业有哪些？主要分布如下：Heating占11.1%，Heating Supply占11.1%，Cheng Shi Ji Chu Facilities占11.1%，Cheng Shi Ji Chu Facilities Construction占11.1%，City Gas占11.1%，Ji Chu Facilities Construction占11.1%，Ji Chu Facilities Investment占11.1%，Clean Energy占11.1%，根据企业库算法分析，仅供参考。
