China's factory growth cooled to multi-month lows in February as domestic demand dipped, weighing on firms already hit by slack foreign sales and underlining the patchiness of the country's economic recovery. An official PMI from the National Bureau of Statistics eased to 50.1 after seasonal adjustments in February, the weakest reading in five months and just above the 50-point level demarcating growth from contraction on a monthly basis. January's reading was 50.4.