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Customs clearance of goods produced at this terminal, but
Customs clearance must be conducted at this desk, right?
Customs clearance is to be conducted at this desk, right?
Customs clearance is to be done at this desk, right?
можно сказать at this terminal, но я бы вообще заменил at this desk на просто here. хотя в жизни с этим не сталкивался