User talk:2804:FDC:B0D0:2000:55F1:7408:586F:C4D1
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Água Imperial[edit]
Água Imperial é o nome de uma técnica de extração de ouro inventada em 2018, utilizada para recuperar ouro de resíduos eletrônicos e para refinamento de ouro, a técnica esta registrada na Biblioteca Nacional sobre o ISBN 9786590218902 e registrada no INPI sobre o certificado 918985269. Elsener Silva (talk) 01:26, 30 October 2023 (UTC)
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