Gold recovery and refining from 327 used soviet transistors KT920A aka "Helicopters"
0.047g Au per unit
follow-up: [ Ссылка ]
#goldrecovery #goldrefining #owltech
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Gold recovery and refining from 327 used soviet transistors KT920A aka "Helicopters"
0.047g Au per unit
follow-up: [ Ссылка ]
#goldrecovery #goldrefining #owltech