HANGZHOU, China — Canadian businesses are hoping to take advantage of Justin Trudeau’s popularity in China, where he’s become known as “Little Potato.”Though much of that popularity is simple excitement over Trudeau’s youth and good looks, there is nonetheless a sense that positive attention for Canada, whatever its nature, could be good for business.Gregg Serles, vice president of worldwide sales for vitamin company Jamieson Laboratories Ltd., said he hopes Trudeau’s brand will help attract more Chinese customers to a new Canada pavilion on Alibaba Group’s e-commerce website, which serves 400 million consumers.“He’s so very well received, and people are impressed with his positiveness and the fact that he wants to make Canadians centre-stage,” Serles said Saturday at the Alibaba campus in Hangzhou. “I think he’s done a great job of that.”“I do believe there’s a good reputation (for Canadian) products,” …