TOKYO (Reuters) - The Bank of Japan kept monetary policy steady on Wednesday but offered a bleaker view on exports and factory output, as Asian factory shutdowns caused supply-chain disruptions for some manufacturers. As widely expected, the BOJ maintained its short-term interest rate target at -0.1% and that for 10-year government bond yields around 0%. “Exports and factory output continue to increase, although they are partly affected by supply constraints,” the central bank said in a statement announcing its policy decision. In July, the BOJ said exports and output continue to increase steadily.