Zhitai Group is the largest manufacturer and seller of image measuring instruments in China, and its subsidiary Kunshan Zhitai Optoelectronic Technology Co., Ltd. is located at No.343 Hexing Road, Kunshan City. There are professional technicians. You can go and have a look. Maybe you're still hiring. At present, there are no training institutions in this field, only the manufacturers who produce these instruments or the companies that buy these instruments conduct training.