Cat Tractor vs TONGYA AUTO Tractor

Cat Tractor and TONGYA AUTO Tractor Which one is better? What is the difference between Cat Tractor and TONGYA AUTO Tractor which is of good quality, the editor learned through comparative analysis Cat Wheel Tractor-Scrapers 631K (Tier 4 Final/Stage IV),Cat Wheel Tractor-Scrapers 621K,Cat Wheel Tractor-Scrapers 637K (TIER 4 FINAL/STAGE IV),Cat Wheel Tractor-Scrapers 657G,Cat Wheel Tractor-Scrapers 637G,TONGYA AUTO Foton Tractor truck ETX 6*4 for trailer,TONGYA AUTO Foton ETX 4*2 Truck head trailer truck,TONGYA AUTO Foton GTL 4*2 Tractor,TONGYA AUTO FOTON GTL 6*4 TRACTOR performance characteristics and detailed parameter configuration for the majority of netizens to refer to, understand Cat Tractor and TONGYA AUTO Tractor Which is better, please pay attention to global-ce.