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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...
Organic and inorganic compound fertilizer
Organic inorganic compound fertilizer is a kind of compound fertilizer that contains both organic matter and appropriate amount of fertilizer. It is a kind of manure, peat and other organic...
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