Can an invention patent application be expedited? If so, how long will it take from application to authorization?

Can be expedited, within 1 year at the earliest.

The State Intellectual Property Office issued the "Administrative Measures for Patent Priority Examination", which will come into effect on August 1, 2017. If the applicant meets the conditions and the State Intellectual Property Office agrees to carry out priority examination: 1. The invention patent application shall issue the first notice of examination opinion within 45 days and close the case within one year.