Yichen Ko te Chinese tohunga waea fehokotaki'anga mohio whai wāhi i roto i te R & D, hanga, hoko me ngā ratonga tuku. whakahere tatou whānui ngā hua hipoki maitai rere cored waea, hau pewa paruruhia kakano ia waea, pewa ngaro kakano ia waea, kawehiko, waea konutea, nati hex me te maitai taiepa pou, etc. hora diameter waea wātea te i 0.6mm ki 3.2mm. Kei te whakaratohia hoki otinga fehokotaki'anga whakaritea.