Safeguard determination requires a causal link between preferential imports and serious injury, with recommended measures and public notice. Director-General must determine within the investigation period whether increased imports receiving preferential treatment under the Trade Agreement have caused or threaten to cause serious injury and whether a causal link exists; recommend safeguard measures and their duration, including progressive liberalisation if the period exceeds one year; and publish final findings stating facts, law and reasons, with a public notice sent to the Ministries of Commerce and Finance.