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Extraction of gold from thiourea
The thiourea method is a new non-toxic gold extraction process. This method has been used in China to treat re-election gold concentrates and flotation gold concentrates. However, this process still...
4% paraformaldehyde solution instructions are here
Now I will bring you a 4% paraformaldehyde solution manual, I hope to help everyone. 4% paraformaldehyde solution instructions Item No.: P1110 Specification: 100ml/500ml Storage: 2-8 ° C can be...
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