BEIJING -- Chinese customs authorities on April 2 made more than 100 arrests to bust six gangs involved in smuggling frozen food in seven provincial regions including Guangdong, Guangxi and Shanghai.

The smuggled frozen food was estimated to be worth more than one billion yuan ($163 million), according to a statement from the General Administration of Customs.

The gangs are thought to have smuggled the food by fraudulently reporting country of origin and import prices; some had directly smuggled the products into the country through the China-Vietnam border.