The reasons are quite simple:
The most restrictive place for the INTERNET and data in general with constant government control cannot be trusted and cannot develop any software without the risk of Chinese government manipulation.
Installing Chinese softwares in your PC is like allowing cyber spies into your system.
The website is
http://www.360.cn/Piracy is Chinese middle name in any industry whether it is software or electronics or anything with a little reverse engineering to create a Chinese patent
And who needs another BitDefender engine
There is no english even in their website and their AV
Using Google translate makes the website really funny
Here is a quote:
Privacy protection v1.1Beta Edition 360
Real-time checks whether the file on your computer to be "peeping"
360 Mobile Guardian v1.9Beta Edition
Anti-harassment
, anti-deductions, the protection of privacy
360 Net Shield v1.4 full version (360 security guards built-in)
Internet access is not online shopping is not being cheated poisoning tamper
Antivirus v1.2 full version 360 (twin engine)
Super lightweight rapid permanent free killing
I am not sure if it is the problem with Google Translate