Spot copper in the Shanghai market was offered at a premium of 290-320 yuan/mt on the morning of Monday April 23.

Zinc concentrate TCs to rise on smelters' cost concerns  

SHANGHAI, Apr 23 (SMM) &ndash; Spot copper in the Shanghai market was offered at a premium of 290-320 yuan/mt on the morning of Monday April 23, SMM learned. This is up from a premium of 230-270 yuan/mt on Friday April 20.

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