Trick to extract gold from your motherboard - YouTube

Sep 30, 2013 ... Step by step process to extract gold from your old motherboard see the whole video ... how much hydrochloric acid add to the chlorine bleach.

Gold Recovery Escrap Computer Scrap Fingers in Aqua Regia ...

Jan 1, 2016 ... Step by step demo on how to recover the gold from trimmed circuit ... + HCL to etch ram fingers, why too much concentration dissolves gold and...

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