TIANJIN - Without making use of any physical stores, China's smartphone maker Xiaomi has gone from zero to $10 billion through online sales alone in just three years.

With no advertisement, traditional food seller Huangtaiji amassed over 100,000 followers on Weibo, or Chinese version of Twitter, while achieving one million yuan ($162,000) of monthly sales in less than two years.

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Their business modes and subsequent success were unimaginable a decade ago. But since China has become the world's No 1 in terms of its 618 million Internet users, or nearly 46 percent of total population, an increasing number of enterprises like Huangtaiji are embracing new ways of doing business.

Internet-savvy He Chang, founder of Huangtaiji, turned a street-corner deli into a popular brand by employing strategies ranging from online marketing to close consumer-company interactions on social networking sites.

Huangtaiji sells "jianbing", a traditional Chinese pancake made on the spot and a popular take-away. In 2012 its first small, clean and Wi-Fi-equipped store opened in East

Marketing campaigns promoted He Chang, 33, as a well-educated young man with overseas education background, love for traditional food and ambition to start a new Chinese-style food brand, which is believed to have helped win more support.

The company now operates four stores in Beijing and is able to rake in 1.6 million yuan ($260,000) in sales per month.

"The success of Huangtaiji is an example of how Internet-based business strategy works," said Zhang Xinsheng, a researcher with the China Institute of Communications.