Not Chinese, they are original Honda taken out from 1.3 hybrid Civic. The button's look and feel is OEM and does not feel Chinese either. For installation if you have Oriel, then its a pretty straight forward process, only the steering wheel is removed (as the clock spring is already installed in Oriels from factory) for installation of buttons and in my case the wire that goes to LCD/Navigation/Infotainment system was already there.
For non-Oriels, clock spring needs to be installed within the steering wheel first which was an additional 2 to 3K. Rest the process was same. In case the wiring is not there, then it has to be installed from steering to the LCD.
All fittings in my case (Oriel) were grip to grip.
Total cost was 5K for buttons. The owner (Hassan) of FB page (Auto Kings) came along which his electrician at my home and installed. Good chap.