Question i will buy this case but...

Looks like it comes with a controller, as well as an extension for 4pin RGB headers - which can be daisy chained with compatible devices.
1*120mm RGB Fan+ Front Panel RGB Strip + Manual Controller; 2 extra ports for RGB devices expansion; Extra cable ready for MB 4Pin RGB_HEADER Control
http://www.deepcool.com/product/case/2018-05/9_8408.shtml

The included fans are 120mm, but supports 140mm too.
Pre-installed: Rear: 1×120mm RGB fan; Front: 1×120mm normal black fan; Optional: Front: 3×120mm or 2×140mm; Top: 2×120mm or 2×140mm
Same link.