Gulu la Changrongjia lomwe linakhazikitsidwa mu 1996, limagwira ntchito popanga nkhungu yokhomerera bwino kwambiri, thumba la pulasitiki la OPP ndi thumba la laminated ndi ukadaulo wosindikiza kutentha komanso ukadaulo wa solar photovoltaic wamakampani akulu akulu azaumisiri chifukwa cha mzimu wake waluso komanso upainiya.
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