RCEP changed how origin is counted. The old test required a tariff shift within one country; now value added across members stacks. A fuel-oil cargo blended in Malaysia and re-labeled in a Chinese bonded zone can pool both jurisdictions' processing toward the origin ratio.

For the seven transshipment grades SNSUC runs — ESPO, Dubai, Oman, Urals, Basrah Light, Bonny Light, Lula — the rule directly lowers the applicable duty on parcels entering ASEAN markets. Shipments once blocked at the threshold by third-country processing now clear on a cumulative certificate.

On the desk, the declaration must carry the full value-added chain: purchase invoice, blending log, labeling hours. Three-document consistency remains the floor; customs checks the added-value ratio, not the final origin label. Concessions reach the cost sheet only when the document flow is complete.

On FX, the yuan sat at 7.646 per euro. Cargoes settled in cross-border RMB skip one conversion versus dollar funding, but a stronger euro eats part of the concession, so the currency exposure has to be priced into the quote.