Ko te Qingdao Qiangli Steel Structure Co. Ltd, i kitea i te 1998, kei roto i nga momo momo hanganga hanganga maitai, hanga, me te whakauru, e whakarato ana i te ratonga kotahi-mutu ki nga kaihoko hei umanga motuhake nui. He tohu matou hei Qingdao Hangarau Hangarau Tuarua me te Tumuaki Tuarua Perehitini o Jiaozhou Steel Hanganga Association.