Goldman Sachs Group chopped back its near-term metals forecasts as China’s economy has “decelerated notably,” while balancing that outlook with a prediction mainland policy makers will respond by stoking expansion in the second half, aiding a revival in copper and aluminum. The bank – which had been consistently bullish on raw materials heading into 2019 – now sees copper at $6 100 a metric ton in three months and $6 400 in six, down from earlier forecasts of $6 500 and $7 000, according to an emailed report received on Monday. The 12-month target was held at $7 000.