SINGAPORE : Oil prices were down in Asia on Monday as Chinese industrial production showed signs of a slowdown, with the strong US dollar also putting pressure on prices, analysts said.New York's main contract, light sweet crude for delivery in April eased 20 cents to $91.75 a barrel and Brent North Sea crude for April dipped 37 cents to $110.48 in afternoon trade. Official data released Saturday showed inflation in China hitting a 10-month high in Feb. Industrial output, which reflects production at China's factories, workshops and mines, rose 9.9pc year-on-year over the first two months of 2013, compared with 11.4pc in the same period of 2012.