美国采购需求：B 型超声波扫描仪、牛妊娠扫描仪、牛超声波扫描仪、手持式超声波设备、迷你超声波机、兽医超声波

I'm reaching out on behalf of our farm, where we specialize in breeding mini donkeys. We're currently exploring options for pregnancy ultrasound machines that can help us monitor the health and development of our donkeys effectively. Could you please provide more detailed information about your ultrasound machines? Specifically, we'd love to know about their features, any specific models you recommend for our needs, pricing, and availability. Looking forward to your response!