Rules of origin require majority domestic production and certified origin for tariff concessions, with verification and confidentiality safeguards.

An imported article qualifies for special tariff concession if it is wholly produced or grown in the exporting Participating State, or wholly manufactured there, or partially manufactured provided the final process of manufacture occurred in that territory and expenditure on material and labour performed in that territory is at least fifty per cent of the factory or works cost of the finished article; factory or works cost includes containers and exterior packing and expenditure on material includes energy, fuel, plant, machinery, tools and their maintenance.

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