The ultrasonic precision spraying system of Shanghai Yangmi provides drug coating solutions for the production of interventional medical devices such as drug-eluting stents and drug balloon catheters, and also provides functional coating solutions for biological medical devices such as vacuum blood collection vessels, syringes, biosensors and microfluidic chips. In addition, the ultrasonic and piezoelectric transducers and sensors of Shanghai Yonge Technology are applied in many biomedical fields, such as high-intensity focused ultrasound knife, in vitro diagnostic sample crushing and dispersion processing, infusion pump dialysis machine, nebulizer, etc.