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As merchants get ready for the approaching "Double 11" online shopping spree, these presale figures might surprise you.

While consumers are busy placing commodities into their virtual shopping carts, Cainiao, a smart logistics network under Chinese e-commerce giant Alibaba, is piling goods of nearly 5 million tons from every corner of the world into its warehouses, to cope with the vast logistics "war".

According to Cainiao's data, goods the company have prepared for this year's "Double 11" could fill the Bird's Nest stadium 1,000 times, and are as heavy as 16,000 Airbus A380s.

Among the commodities, facial masks, feminine care products and shampoo are the top three pre-ordered products. The face masks prepared by the company could be sold to every person in South Korea - a massive consumer of such products - five times.

Moreover, snacks prepared by Cainiao warehouses could feed faculties and students of an entire university for a whole year.

By the end of Nov. 1, a sandwich maker had become the best-selling product on Tmall, Alibaba's e-commerce platform. Sales of the sandwich maker had increased 100 times since last year.

During a live-streaming show of the "Double 11" promotion, 80,000 sandwich makers were sold in 5 minutes, an average of 267 per second. It is estimated that nearly 500,000 such machines will be sold during the shopping spree this year.