(i)it begins to manufacture or produce articles after the 30th day of September, 1977 ][but before the 1st day of April, 1990] [ Inserted by Act 12 of 1990, Section 21 (w.e.f. 1.4.1990).][, in any rural area; [Inserted by Act 29 of 1977, Section 18 (w.e.f. 1.4.1978).]