Crude transshipment runs under the "new-type offshore international trade" framework, and the forex bureau draws a hard line: one offshore back-to-back deal should in principle be handled at one bank, in one currency. Switching banks or currencies is not forbidden, but the bank must first verify the deal is genuine and lawful, mark the remark "special offshore back-to-back" in the external payment declaration, and report to the forex bureau within five business days of the transaction.

SNSUC's compliance posture is an offshore SPV signing the contract and transferring title to the Chinese refiner, which clears import customs on its own quota. SNSUC is never the Chinese import filer. That line splits "can we get the cargo" from "who files the customs entry," steering clear of the compliance traps around transferring or trading import allowances.

On settlement, CIPS direct clearing pulls transshipment payments from T+2 to T+1. The single-bank, single-currency channel runs smoother each time, and the pre-filing for special offshore back-to-back deals is now baked into the standard playbook, so the account bank's due diligence passes at the first review rather than stalling at the counter.