Lei Xu will become JD.com's new president and be responsible for the company's day-to-day operations.
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It will serve independent retailers and small businesses.
It also added 1.3 million active customers over the past 12 months.
The company also saw its active customer base increase by around 580,000 during the financial year.
Partnering together will give Coles access to 11 million unique monthly visitors through eBay's local online marketplace.