significant cause
(2) (A) Market disruption exists within a domestic industry whenever imports of an article, like or directly competitive with an article produced by such domestic industry, are increasing rapidly, either absolutely or relatively, so as to be a significant cause of material injury, or threat thereof, to such domestic industry. (B) For purposes of subparagraph (A): (i) Imports of an article shall be considered to be increasing rapidly if there has been a significant increase in such imports (either actual or relative to domestic production) during a recent period of time. (ii) The term “significant cause” refers to a cause which contributes significantly to the material injury of the domestic industry, but need not be equal to or greater than any other cause. (C) The Commission, in determining whether market disruption exists, shall consider, among other factors— (i) the volume of imports of the merchandise which is the subject of the investigation; (ii) the effect of imports of the merchandise on prices in the United States for like or directly competitive articles; (iii) the impact of imports of such merchandise on domestic producers of like or directly competitive articles; and (iv) evidence of disruptive pricing practices, or other efforts to unfairly manage trade patterns.