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Summary of significant accounting policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary of significant accounting policies

Schedule of estimated useful lives of property, equipment and software

Category		Estimated useful lives
Electronic equipment			3-5 years
Office equipment			5 years
Vehicles			3-5 years
Logistics, warehouse and other heavy equipment			5-10 years
Leasehold improvement			Over the shorter of the expected life of leasehold improvements or the lease term
Software			3-5 years
Building			40 years
Building improvement			5-10 years

Schedule of estimated useful lives of intangible assets

Category		Estimated useful lives
Strategic cooperation			5 years
Non-compete			5-8 years
Domain names and trademarks			5-20 years
Technology and others			2-10 years

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