Section 20. (1) If in any accounting year an establishment in public sector sells any goods produced or manufa

20. (1) If in any accounting year an establishment in public sector sells any goods produced or manufactured by it or renders any services, in competition with an establishment in private sector, and the income from such sale or services or both is not less than twenty per cent, of the gross income of the establisJiment in public sector for that year, then, the provisions of this Act shall apply in relation to such establishment in public sector as they apply in relation to a like establishment in private sector. (2) An establishment in public sector to which this Act applies shall continue to be governed by this Act notwithstanding that in any subsequent accounting year its income from the sale of goods produced or manufactured by it or from services rendered or from both, in competition with an establishment iri private sector, falls below twenty per cent, of its gross income for that accounting year.