Qingdao Puhua Heavy Industrial Group e thehiloe ka 2006, motse-moholo o ngolisitsoeng o fetang lidolara tse 8,500,000, sebaka sohle se ka bang lisekoere-mithara tse 50,000. Khamphani ea rona e fetile CE, litifikeiti tsa ISO. Ka lebaka la lihlahisoa tsa rona tsa boleng bo phahameng, tšebeletso ea bareki le theko ea tlhōlisano, re rometse mochine oa rona linaheng tse fetang 90, tse kang USA, Russia, Jeremane, Australia, Saudi Arabia, Brazil, Ukraine, Egypt, India, Vietnam joalo-joalo. .