Cat Rotary Drilling Rig vs Yishan(Tianjin)Heavy Rotary Drilling Rig which is better

Cat Rotary Drilling Rig and Yishan(Tianjin)Heavy Rotary Drilling Rig Which one is better? What is the difference between Cat Rotary Drilling Rig and Yishan(Tianjin)Heavy Rotary Drilling Rig which is of good quality, the editor learned through comparative analysis Cat Rotary Drills MD6200,Cat Rotary Drills MD6640,Cat Rotary Drills MD6540C,Cat Rotary Drills MD6310,Cat Rotary Drills MD6250,XRS1050 Rotary drilling rig,XRS680 Rotary drilling rig,XR400D Rotary drilling rig,XR320D Rotary drilling rig,XR260D Rotary drilling rig performance characteristics and detailed parameter configuration for the majority of netizens to refer to, understand Cat Rotary Drilling Rig and Yishan(Tianjin)Heavy Rotary Drilling Rig Which is better, please pay attention to global-ce.