SEM Bulldozer vs Cat Bulldozer which is better

SEM Bulldozer and Cat Bulldozer Which one is better? What is the difference between SEM Bulldozer and Cat Bulldozer which is of good quality, the editor learned through comparative analysis SEM Track Type Tractor SEM816D,SEM822D Track Type Tractor,SEM822LGP Track Type Tractor Bulldozer,SEM822 Track Type Tractor Bulldozer,CAT CAT®844K Wheel dozer,CAT CAT®854K Wheel dozer,CAT CAT®D3K2 Track-type tractor,CAT CAT®D4K2 Track-type tractor,CAT CAT®D5K2 Track-type tractor performance characteristics and detailed parameter configuration for the majority of netizens to refer to, understand SEM Bulldozer and Cat Bulldozer Which is better, please pay attention to global-ce.