Complex sentence: They also created an independent mobile internet subsidiary known as Cheetah Mobile and has worked on security software products, most recently moving towards internet-based applications, such as Kingsoft Kuaipan (a free cloud storage application running on multiple platforms).
Split into simpler sentences: They also created an independent mobile internet subsidiary known as Cheetah Mobile. The company has worked on security software products, most recently moving towards internet-based applications, such as Kingsoft Kuaipan (a free cloud storage application running on multiple platforms).