Ka la 17 Pulungoana 2020, k'hamphani ea rona e ile ea boela ea fumana tumello ea patent ea mofuta oa "copper cooling stave three link phase cutting hole processing tool assembly".
Theknoloji ea morao-rao: Letlapa la koporo ke mofuta o mocha oa sesebelisoa sa ho pholisa se ntlafalitsoeng lilemong tsa morao tjena, se nang le litšobotsi tsa ts'ebetso e phahameng ea ho pholisa le bophelo bo bolelele ba tšebeletso.
Nako ea poso: Feb-28-2021