The safeguard measures applied under section 8B of the Customs Tariff Act shall, unless revoked earlier, cease to have effect __________

Section 8B.   Power of Central Government to apply safeguard measures: (8) The safeguard measures applied under this section shall, unless revoked earlier, cease to have effect on the expiry of four years from the date of such application: Provided that if the Central Government is of the opinion that the domestic industry has taken measures to adjust to such injury or threat thereof and it is necessary that the safeguard measures should continue to be applied, it may extend the period of such application: Provided further that in no case the safeguard measures shall continue to be applied beyond a period of ten years from the date on which such measures were first applied.