Existing investor SIG returned for the mobile communication app developer's series D round, which was led by a China Construction Bank unit.

China-based mobile communication app developer Chubao Technology has raised $100m in series D funding from investors including technology and trading firm SIG, China Money Network, China Money Network reported today.

The round was led by CCB International, part of financial services firm China Construction Bank, and also featured venture capital firms HG Capital, Sequoia Capital China and Qiming Venture Partners.

Chubao has created both a smart dialler tool that had 6 million daily active users as of September 2016, and a multilingual content input app with some 90 million daily active users.

The funding will go to technology development, as Chubao looks to improve both platforms, and the company intends to grow its research and development team with a view to focusing on speech recognition technology.

SIG provided $10m in series B funding for Chubao in 2011 before Sequoia Capital China led its $65m series C round three years later. Qiming Venture Partners subsequently led the company’s $46m series C+ round in July 2016.