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📱Sim cards recycling📱Gold recovery from cell phone sim card

*Gold Recovery from Sim Cards* I use very easy method to recover gold from sim cards.I take only 0.700g sim cards and dip them in HCL.Add some water then ad 50ml HNO3.Give 1 hour for reaction.then I add more HNO3 to dissolve gold completely in solution.Af

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Uploaded on:
06/15/2017 04:06 AM

Views: 818

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