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 mochine o pholileng o ntlafalitsoeng lilemong tsa morao tjena, o nang le litšobotsi tsa ho sebetsa hantle haholo le bophelo bo bolelele ba tšebeletso.
Nako ea poso: Feb-28-2021