Japanese manufacturers turned slightly less confident about business conditions in August and the service sector’s mood eased, the monthly Reuters Tankan survey found on Wednesday, as lacklustre demand from China weighed on corporate sentiment. The poll comes after the Bank of Japan (BOJ) last month raised interest rates to levels unseen in 15 years and released a detailed plan to slow its massive bond buying. The sentiment index for manufacturers slipped to plus 10 in August, down one point from July, according to the Reuters Tankan survey, which closely tracks the BOJ’s quarterly business survey.