China's four express delivery giants hit new highs of orders during Monday's online shopping Singles' Day frenzy, said industry authorities on Tuesday.

On Monday, Shentong, Yuantong(YTO), Yunda and Zhongtong(ZTO) each received delivery orders for over 10 million pieces, said Li Huidu, vice chairman of China's Express Association.

"It was a remarkable day that lifted them all into the 'ten million club' and is a huge vote of confidence for China's express industry," he said.

As of 12 a.m. Monday, express enterprises had received delivery orders for over 144 million items, double the orders for the whole of last Singles Day.

Netizens frenetic clicking during 24 hours of online shopping madness shows just how China's online retail sector is booming, with a plethora of discounts and record-breaking sales.

YTO Express received 12.5 million orders on Monday, over 70 percent up on last year's Singles' Day.

"We have been preparing our information management system, manpower, equipment and vehicles for the online shopping bonanza for a very long time," said Yu Weijiao, chairman of YTO Express.

Alibaba, an e-commerce giant, saw sales on its two online platforms Tmall.com and Taobao.com 83 percent up on a year ago, at 35 billion yuan (almost 6 billion U.S. dollars) when the Chinese version of Cyber Monday ended at midnight.