SHANGHAI, Apr 20 (SMM) – SMM assessed imported clean copper concentrate treatment charges (TCs) at $70-78/mt on Friday April 20, up $1/mt from a week ago.
Spot trading over the past week was thin as smelters held back purchasing amid relatively low TCs.
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![The most-traded BC copper contract closed up 0.43%, with trading activity sluggish as the Chinese New Year holiday approaches. [SMM BC Copper Review]](https://imgqn.smm.cn/usercenter/mPNrH20251217171709.jpg)


