Edan Instruments, Inc. is based in Shenzhen, a major electronic center where talent and productivity converge, Edan employs more than 500 employees working in R & D, manufacturing and marketing of medical equipment. Edan was established in 1995 and its market share has grown steadily and is today in the area of fetal monitoring (among others) a first choice in the world with a production of tens of thousands of fetal doppler by years.