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 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.
It will serve independent retailers and small businesses.
Partnering together will give Coles access to 11 million unique monthly visitors through eBay's local online marketplace.