From doing a search it seems they use PowerMore engines like the MTD line. There are 3 main chinese brands Which are PowerMore used by MTD and a few other brands such as SnoJoe it seems, I think Lausen is used on Toro and LCT which is used on Ariens and Husqvarna so if you do a search on the PowerMore engine or even on the 208cc MTD engines.
Sno-Tek Modded, 15"X-Track tires (Now has same X-Track tires but 13"x4" for better fit), 254cc engine LED light and hand warmers.
Snapper 6/22 sold but not forgotten. Was my first.
Ariens ST1027LE workhorse and going strong.
New 2017 Ariens Deluxe completely rebuilt after losing a fight with a forklift.