Any health insurance issuer offering health insurance coverage to a employer shall make a reasonable disclosure of the availability of information to such an employer, as part of its solicitation and sales materials, and upon request of such an employer, information concerning: (i) the provisions of such coverage concerning the health insurance issuer’s right to change premium rates and the factors that may affect changes in premium rates; (ii) the provisions of such coverage relating to renewability of coverage; (iii) the provisions of such coverage relating to any preexisting condition exclusion; and (iv) the benefits and premiums available under all health insurance coverage for which the employer is qualified. A health insurance issuer is not required under this article to disclose any information that is proprietary and trade secret information.