The Guangdong Province in southern China reported a big increase in the import of cars, including off -road 4WD models, in the first half of this year, AsiaPulse said. Imports doubled to 9,715 units including 7,349 cars, compared with the same period of 2000, AsiaPulse said. Middle-grade cars with engines under 2.5 litres accounted for 75 percent of the imports.