From the EE Times:
China will start to enforce a compulsory universal cell phone charger standard this month. All cell phones designed after June 14 must adopt the universal charger interface, based on USB, otherwise they will not be approved for sale in China, according to the Ministry of Information Industry, which is responsible for enforcing the rule.The goal is to reduce the number of chargers that are thrown away each year because of cell phone upgrades. Nearly 100 million cell phones are replaced every year in China, according to MII. [Full Text]
See also the People’s Daily article from 2006 when the cell phone charger plan was first announced.