The Songle brand is present, and you will find that parts and documentation are simple to track down online.
Song Chuan 896H-1CH-S-R1 Automotive Relay Quick Connect 12VDC 50AMP (QTY 4)
The Schneider Electric name is on this relay, and that detail matters when ordering parts for the job.
A nice touch is the 70*20*18mm / 2.75*0.78*0.7" dimension that fits standard brackets.
You will find that the LY2N Relay IEC255 helps keep spare since it uses the same footprint as others I use.