China ↔ United States

West coast or east coast is the first real decision

Cargo from China can enter the United States through the Pacific gateways or continue through the Panama Canal to the Gulf and eastern seaboard. The sea leg is shorter to the west coast; the inland leg from it is longer for anything destined east of the Rockies.

Which is cheaper overall depends entirely on the final destination. For cargo going to the interior or the east, an all-water routing to an eastern port replaces a long domestic rail or road movement with more sea time. For cargo going to the western states, that trade is obviously not worth making.

The mistake worth avoiding is comparing port-to-port costs and treating the inland leg as an afterthought. On this lane the inland leg is frequently the larger number.

Ocean is the default and the reason is arithmetic

Most of what moves on this lane is consumer and industrial goods whose value per kilogram cannot support an air rate. Ocean pricing is per container, which is why the first question on a full-container enquiry is whether the cargo fills the box by volume or by weight — cargo that cubes out before it weighs out is buying space, and cargo that weighs out first is leaving space unpaid for.

Below a container load, consolidation is the alternative: cargo from several shippers travels as one container and is broken down at destination. It costs less than an unfilled container and takes longer, because it inherits the timing of the consolidation and the deconsolidation at the far end.

Air is a deadline decision, not a freight decision

Air freight on this lane exists to solve a problem that has already happened: a production delay, a stock-out, a launch date that cannot move. It is priced accordingly.

The relevant comparison is never air against ocean in isolation. It is the cost of the air movement against the cost of the consequence — a halted line, a missed season, a penalty — which is a commercial question the shipper is better placed to answer than the forwarder.

Westbound and eastbound are not mirror images

Volume on this lane is heavily weighted in one direction. That imbalance is structural rather than seasonal, and it has consequences a shipper feels: pricing differs sharply by direction, and empty equipment has to be repositioned to where it is needed.

The practical effect for a shipper moving cargo in the lighter direction is that capacity is usually easier to find, and the constraint moves from securing space to the quality of the inland arrangements at each end.

Export and import coordination are different jobs

Leaving China, the work concentrates on export formalities, the factory-to-port road leg and meeting the terminal cut-off. Arriving in the United States, it concentrates on the import entry, terminal release and arranging the onward inland movement.

Which party is responsible for which step is set by the terms agreed between buyer and seller, not by geography. Assuming the counterparty is handling something because they are at that end of the lane is one of the more common and expensive errors on this trade.