Chinese regulators announced Friday that they would impose heavy tariffs on Australian wines after finding preliminary evidence of dumping. Starting Saturday, China will begin slapping duties of between 107.1% and 212.1% on Australian wine imports, the Ministry of Commerce said in a statement.China is by far the biggest importer of Australian wine, according to Wine Australia, a trade organization backed by the country’s government. In the most recent financial year, which ended this September, mainland China alone made up 39% of Australia’s total wine exports by value, the group said.In August, Australia effectively blocked the sale of a dairy business to a Chinese company when an official said the acquisition “would be contrary to the national interest.” That business, Lion Dairy, is now being sold to Australian firm Bega Cheese instead, in a deal worth 560 million Australian dollars ($413 million), the companies announced this week.