How many ultrasonic companies are there in the world?

50. According to the query data. There are Qingdao Haier, Philips (China) Investment Co., Ltd., General Electric Medical System (China) Co., Ltd., Siemens (China) Co., Ltd., Toshiba Medical System (China) Co., Ltd., Shenyang Neusoft Medical System Co., Ltd., Shenzhen Wilder Medical Electronics Co., Ltd., Jiangsu Zhonghui Medical Technology Co., Ltd. and so on.