Blue Diamond

As Amazon.com struggles to expand in China, the U.S. online retailer has opened a flagship store in local competitor Alibaba Group Holding's online marketplace. Amazon's store inside Alibaba's Tmall, launched this week, so far offers a limited number of product categories, including imported food, women's shoes, toys and kitchen equipment. The food section, for example, includes Blue Diamond almonds and Californian wine, while the toy section carries international brands such as Lego and Crayola.