埃塞俄比亚采购需求：旋转钻机、液压破碎桩机、液压动力单元、蛤壳式伸缩臂、液压打桩机配件、打桩及施工设备

I'm looking for a rotary drilling rig with an operating weight in the range of 45 to 65 tons. This weight should include the Kelly bar, standard drilling tools, and necessary counterweights. The rig should be equipped with a fully hydraulic drive system featuring load-sensing control to ensure optimal performance during operations. Additionally, I require a user-friendly operation mode, preferably with a cab that includes joystick and electronic control for ease of use. The mobility of the machine is also important, so it should come with a robust steel crawler undercarriage for stable movement on various terrains. Please provide detailed specifications, pricing, and availability at your earliest convenience.