As Chinese authorities in two towns have started seizing iPads from local retailers, China-based Proview is now seeking an import ban on the device. Citing various Chinese-language news reports as well as Proview attorney Ma Dongxiao, the New York Times reports that the confiscated iPads are under “temporary impoundment” from retailers in Xuzhou and Shijiazhuang. According to the report, Proview has asked authorities in more than 20 cities…