Huaneng Zhongtian Energy Conservation Technology Group Co., Ltd. wani tushe ne na samar da ulun dutse da roba a arewacin kasar Sin.An kafa shi a cikin 1985, yana bincike don ceton makamashi da kayan da ake amfani da su don gine-gine tsawon shekaru 35.Ƙungiyar ta ƙunshi yanki mai girman eka 420, tana ɗaukar mutane sama da dubu, kuma ta shiga cikin ƙirƙira da sake fasalin ƙa'idodin ƙasa sau da yawa, inda ta sami takaddun shaida kusan ɗari.