Bilateral safeguard confirmation increases customs duty on polybutadiene rubber imports from Korea with exclusions and time limits. The Central Government confirms the provisional bilateral safeguard measure on imports of Polybutadiene Rubber originating in Korea under the India-Korea CEPA, and amends the principal Customs notification to insert serial number 342C for tariff item 400220 (Polybutadiene Rubber excluding titanium and lithium grades) with a specified customs duty rate. The amendment revises the proviso to provide time-limited application windows for affected table entries, implementing the Authority's final findings that increased imports caused and threatened serious injury and that a causal link exists to CEPA duty reductions.