Xinhua News Agency, April 15 / PRNewswire-FirstCall-Asianet /-- the Shanghai National auction Company announced today that the April license plate auction will be held on April 22 (10:30-11:30), with a personal quota of 10800 vehicles this month. 2423 cars in use were auctioned, a total of 13223 vehicles were auctioned, an increase of 740 vehicles over the previous month. The warning price is 91500 yuan.