Any person, firm, or corporation granted an Industrial Development Certificate in accordance with chapter 12 of Title 29, Virgin Islands Code, shall be exempt from the payment of all excise taxes (except gasoline taxes) imposed by the Government of the United States Virgin Islands on raw materials and component parts brought into the Virgin Islands by the certificate holder for the purpose of producing, creating or assembling an article, good or commodity as a result of industrial or manufacturing processing of such raw materials and component parts. Said exemption shall be valid only during the period such certificate is in effect.