General Motors Corp may be struggling mightily in the US, restructuring under bankruptcy protection, but the automaker has harvested a half-year sales record in China, where it promised to "continue to invest in heavily".

GM China Group yesterday reported that the company and its two local joint ventures sold 814,442 vehicles in the country in the first six months, representing an increase of 38 percent from the same period last year, after its June sales continued the robust growth with 61.6 percent over last year.

The government's stimulus measures have helped boost the demand of small cars and minivans.