(a) Rates for all lines of insurance subject to a law described by Section 2001.001(a) are determined as provided by Chapter 2251 and Article 5.13-2.
(b) The requirement imposed by Subsection (a) does not affect the requirement for the commissioner to conduct inspections of commercial property and prescribe a manual of rules and rating schedules for commercial property under a law described by Section 2001.001(a).