It is the policy and purpose of this State to provide protection to the public against possible hazards and to promote sound building construction and for that purpose to forbid the sales, rental, and use of new modular building units which are not so constructed as to provide safety and protection to their owners and users. Because of the nature of the construction of modular building units, their assembly and use and that of their systems, including heating, cooling, plumbing, and electrical which may have concealed parts, there may exist hazards to the health, life, and safety of persons or property which are not easily ascertainable by purchasers, users, and local building officials.