Aluminium prices fell on Friday, while zinc, nickel, and lead also declined. Investors reacted to reports that US President Donald Trump may reduce tariffs on imported metals. Markets priced in a potential shift ahead of November’s midterm elections. The three-month aluminium contract on the London Metal Exchange dropped more than 2.5% to $2,965.75 per tonne by midday. On the Shanghai Futures Exchange, the most active aluminium contract fell 1.76% to 23,195 yuan per tonne. Industrial Metals Follow…