Alibaba has claimed its purchase of the mobile software provider, in which it held a 66% share, is China's largest ever internet merger.

E-commerce firm Alibaba acquired UCWeb, the China-based mobile browser developer in which it already held a 66% stake, today for an sum which, despite being undisclosed, Alibaba said represented the largest internet merger in Chinese history.

That statement means the deal, which will be conducted mainly in stock with some cash also involved, will surpass Baidu’s $1.9bn purchase of app distribution platform 91 Wireless in 2013.

Alibaba, set to go public in the US later this year, has been on…