(a) On and after the effective date of this article, all offices, departments, institutions and agencies of this state supported, in whole or in part, by state funds shall purchase all articles or products which they require from the commissioner, if those articles or products are produced or manufactured by correctional industries, as provided by this article. No state office, department, institution or agency may purchase an article or product which correctional industries produces from any other source, unless specifically excepted from the provisions of this section pursuant to section six of this article.
(b) Purchases of correctional industries articles or products by state offices, departments, institutions and agencies shall be made on requisition by the office, department, institution or agency requiring the articles or products.
(c) Political subdivisions, not-for-profit corporations and charitable agencies chartered in West Virginia, units of the federal government and units of government of other states may purchase articles and products produced by correctional industries. Entities which contract with the state, its political subdivisions, its agencies or its public institutions may purchase from correctional industries articles and products used in the performance of their contracts.