巴西采购需求：黑白超声、彩色多普勒超声、心电图、数字X光、病人监护仪

I'm looking for detailed information on ultrasound models specifically designed for veterinary use with cows and horses. It would be great to receive specs, features, and any available accessories for these models. In addition, if there are any pricing details or bulk order options, please include that as well. I'm interested in understanding the differences between the various models to make an informed decision for our needs. Thanks!