What are average profit margins in this industry, and how are they expected to change in the next 3 years?

本行业的平均利润率以及未来三年的变化（增加或减少）情况？

youdao

What are average profit margins in this industry, and how are they expected to change in the next 3 years?

本行业的平均利润率以及未来三年的变化（增加或减少）情况？

youdao