Why is the salary of Zhongneng Silicon Industry high?

This is a big enterprise. Zhongneng Silicon Industry is the R&D and manufacturing base of high-purity polysilicon with the largest single investment in the world. It is a powerful large enterprise with high salary, which belongs to the PetroChina system and is difficult to be promoted. Jiangsu Zhongneng Silicon Industry Technology Development Co., Ltd. is a high-purity polysilicon production enterprise wholly owned by China and Hongkong listed company Poly Xiexin (HK3800), and a school-enterprise cooperation unit of China University of Mining and Technology.