美国采购需求：超声波诊断系统、多普勒超声波、黑白超声波、兽医超声波、二维三维超声波、

I'm a nurse looking for an economical and portable ultrasound device that meets my clinical needs. Flexibility is key for me, since I'll be using it in various settings, including home visits and community health programs. I'm interested in options that offer good image quality, as well as user-friendly features to streamline my workflow. Could you provide me with details about the available models, their functionalities, and pricing? I'd also appreciate any information on warranty and after-sales support you offer. This will help me make an informed decision for my practice, ensuring I can provide the best care for my patients while staying within budget.