Section 8

The determination referred to in subsection (1) shall not be made unless the investigation demonstrates, on the basis of objective evidence, the existence of the causal link between increased imports of the product under investigation and serious injury or threat thereof.

When factors other than increased imports of the product under investigation are at the same time causing or threatening to cause injury to the domestic industry, such injury shall not be attributed to the increased imports..

Threat of serious injury and causal link