(Reuters) - Video game publisher Nintendo said on Tuesday that three January raids in south China netted 300,000 counterfeit games, spotlighting the ongoing war by western firms against piracy in China. The games were seized at three factories in Guangdong province -- a hotbed of pirating activity in China for high- and low-tech products alike, experts said. Nintendo spokeswoman Jodi Daugherty could not give a value for the products seized. She said Nintendo, maker of Game Boy hand-held consoles, seized one million counterfeit products in 2002, and backed 135 raids on Chinese factories that year. Nintendo estimates counterfeiting cost the company and its licencees about US$649 million in lost sales in 2002. Daugherty said a main focus of the company's efforts to combat the problem has been on China.