SMM

Yangshan copper premiums with a quotation period in May stood at $18-28/mt under warrants during April 17-21, with the average down $2.8/mt from a week earlier. Those stood between $30-50/mt under bill of lading with a quotation period in May, with the average down $3.7/mt. As of April 21, the SHFE/LME copper price ratio stood at 7.78, and import losses were 262 yuan/mt.