Apple's website in China displayed the characteristics of an official Apple charger. This came after an incident that killed 23 year old flight attendant Ma Ai Lun. Lun was allegedly killed from an electrical charge that came out of her Apple iPhone 5 while she was answering a call. The phone was plugged into an outlet at the time, using an unauthorized charger.
Other situations took place afterward, including a man shocked into a coma by his Apple iPhone 4, and another man who allegedly went flying across the room when he touched his daughter's Apple iPad. In order to get unauthorized chargers out of commission, Apple started a trade-in offer where it would sell an Apple authorized charger for $10 to anyone bringing in a knock-off or unauthorized third party charger. The offer is available in the U.S., China, and other countries such as Australia ($14 AUD), Canada ($11 CAD), France (€10), Germany (€10), Japan (￥1,000), and the United Kingdom (10 GBP).