Musi waNovember 17, 2020, kambani yedu yakawanawo mvumo yekushandisa patent ye "copper cooling stave three link phase yekucheka hole processing tool assembly".
Yekumashure tekinoroji: Copper stave imhando nyowani yekutonhodza mudziyo yakagadziriswa mumakore achangopfuura, ine hunhu hwekutonhora kwakanyanya uye hupenyu hurefu hwebasa.
Nguva yekutumira: Feb-28-2021