Electronics are the most common cargo category out of Shenzhen, and the one where the gap between a well-prepared shipment and a poorly prepared one is widest. The goods are valuable enough that damage hurts, dense enough that the freight cost is manageable, and regulated enough that paperwork errors are expensive.
Start with batteries, because they dictate everything else. If a product contains or ships with a lithium battery, it is dangerous goods. That is true whether the battery is loose, packed with the equipment, or installed inside it — the three cases have different rules and different packing instructions, but none of them is "no rules". Air is the most tightly regulated, sea less so, rail somewhere in between. Declaring a battery you did not have to declare costs you a little money; failing to declare one you did is a safety incident and will stop the shipment.
Second, packaging. Electronics fail in transit from vibration and compression far more often than from a single dramatic impact. Cartons need to be rated for the stack height they will actually experience, not the one you imagine, and inner packaging has to immobilise the product rather than merely surround it. A device that can move a centimetre inside its box will move that centimetre several million times on a five-week ocean voyage.
Third, classification. Electronics classification is genuinely difficult because the HS code often turns on function rather than form, and small differences in specification move the code and the duty. Getting this right before shipping is cheap; getting it wrong and correcting it after an entry has been filed is not. If you are unsure, ask for a binding ruling from the destination customs authority rather than guessing consistently.
Fourth, valuation and intellectual property. High-value electronics attract attention, and customs authorities in most of our destination markets actively check both declared value and brand authorisation. Undervaluing to reduce duty is not a grey area — it is fraud, and the penalty regimes are severe. If you are shipping branded goods, carry the documentation that shows you are entitled to.
On mode: air suits launch quantities, replenishment of fast sellers and anything where obsolescence is measured in weeks. Ocean suits stable, forecastable volume. Rail is increasingly the sensible middle for Europe-bound electronics, which is why a large share of the China–Europe rail volume has historically been exactly this category.
A final practical note. Electronics shipments are frequently consolidated from several suppliers. Where that happens, the weakest supplier sets the quality of the whole consignment — one badly packed carton in a container of forty will damage its neighbours. If you are consolidating, it is worth specifying packaging standards to every supplier rather than to your main one only.
