(a)evidence of -(i)increased imports of the originating good;(ii)serious injury or threat of serious injury to the domestic industry;(iii)a causal link between imports of the originating good and the alleged serious injury or threat of serious injury; and(iv)the reduction or elimination of a customs duty under the Agreement being a cause which contributes significantly to the increase in imports of the originating good and such imports alone constitutes a substantial cause of serious injury or threat thereof to domestic industry: