(a) An individual or firm may not:
(1) engage in the business of installing or servicing portable fire extinguishers without holding a registration certificate;
(2) engage in the business of planning, certifying, installing, or servicing fixed fire extinguisher systems without holding a registration certificate;
(3) install, service, or certify the servicing of portable fire extinguishers or plan, certify, service, or install fixed fire extinguisher systems without holding a license;
(4) perform hydrostatic testing of fire extinguisher cylinders manufactured in accordance with the specifications and requirements of the United States Department of Transportation without holding a hydrostatic testing registration certificate;
(5) obtain or attempt to obtain a registration certificate or license by fraudulent representation;
(6) install or service portable fire extinguishers or plan, certify, service, or install fixed fire extinguisher systems in violation of this chapter or the rules adopted and administered under this chapter;
(7) except as provided by Subsection (b), install, service, or hydrostatically test a fire extinguisher that does not have the proper identifying labels;
(8) sell, install, service, or recharge a carbon tetrachloride fire extinguisher; or
(9) except as provided by Subsection (b), lease, sell, service, or install a portable fire extinguisher, a fixed fire extinguisher system, or extinguisher equipment unless it carries an approval label or listing label issued by a testing laboratory approved by the department.
(b) The commissioner by rule shall permit an individual or firm to service a portable fire extinguisher regardless of whether the extinguisher carries a label described by Subsection (a).