It is the second year of Prowine in China. The event attracted nearly 600 exhibitors from 28 countries. It's affiliated with the important Prowine expo in Dusseldorf, Germany, usually held in March. Wines from small countries made a strong appearance at Prowine China. Countries such as Austria, Slovakia, Croatia, Georgia and Bulgaria presented their wines alongside traditional strong importers such as France and Australia.

"In the past three or four years I have seen smaller wine countries becoming more important in the market," says Hermann Mayer, chief executive officer of WM, a wine marketing agency based in Vienna.

There are representatives from 30 Austrian wineries at the show, says Mayer, because China has become more important as a wine market. Mayer says Austria exported 250,000 euro ($340,000) worth of wine to China in 2008. Last year, the figure rose to 2.4 million euro. In 2009, China was not among Austria's top 20 countries of wine exportation. But in 2012, China became No 5.

Unlike Potzinger and Gratzer, who are in China for the first time, Slovakian businessman Roman Sipos knows his market well. A sales representative for Gas Familia vodka, his products with temptingly mixed fruit flavors, are already available in Shanghai, Xiamen of Fujian province and Chengdu of Sichuan province.

"The culture of imported spirits in China has become very popular," he says. "In China, 90 percent of what people drink is spirits, so there is a big potential for my product."

Sipos says it is difficult to sell pure vodka to Chinese customers, but they like the fruit flavors and sweetness in his mixed vodka, which goes through magnetic filtration.

Li Demei, wine consultant and lecturer at Beijing Agriculture University, says in the past, Chinese people knew Austria for its music and history, but not for its wines. He visited the country's viticulture regions in part to explore the distinct features of the country's single-varietal wines. "In the past 30 years Austrian wine has rebuilt its image and regained recognition," he says.

The wine challenge was organized by Tommy Lam, president of the Sommelier Association of Singapore. The judge panel included six master sommeliers with international backgrounds, and 17 top sommeliers from China.

Mayer, who works in his company's Shanghai office, observes, "More and more young people age between 25 and 30 enjoy drinking wine." On the other hand, he sees an enormous space for "improvement" in the variety and quality of wine in China.