No person hereafter shall engage within this State in the business of operating any frozen food locker plant without having applied for and obtained from the director of the department a license for each such place of business. Applications for the license shall be made in writing to the director of the department, on the forms and with the pertinent information as he or she may deem necessary. These licenses shall be granted promptly as a matter of right unless conditions exist that are grounds for denial of a license, as hereinafter set

forth.