Alibaba Group's subsidiary Alibaba.com's B2B platform connects millions of registered small-business buyers and sellers of Chinese products online.
Jack Ma, chief executive of Alibaba Group, discussed the new platform -- Ali Express (http://wholesale.alibaba.com) -- at a business conference in Hangzhou.
Alibaba Group is also the parent of Taobao, China's largest online auction site, and Alipay, an online payment service provider.
The new platform is currently in a testing phase, said an Alibaba spokeswoman, declining to give more details.
Alibaba.com opened its European headquarters earlier this month and recently launched a $30 million global advertising campaign.
The firm has also said it is considering setting up a joint venture company in India to manage its B2B platform.
U.S. search engine Yahoo holds about 40 percent of Alibaba Group and has an investment of more than 1 percent in the listed firm.
(Reporting by Melanie Lee; Editing by Rupert Winchester)