Why is the salary so high?

This work is very difficult. According to the inquiry of Zhongke Feice official website, this company is a company that develops, designs, sells, installs, debugs and tests photoelectric automation equipment, electromechanical automation equipment, photoelectric instruments, photoelectric equipment, electronic products, mechanical products, computers and software, industrial automatic control systems, image and data processing systems, etc. High technical requirements and difficult work lead to such a high monthly salary of 7000 to 9000 yuan.