Things to think about, when ordering from overseas... (From the USA.)
Most delivery is by "Air".
Things not allowed on "Air", includes "
batteries".
Things which are not normally allowed to be exported, includes "Chemicals", and specifically any unidentified chemicals and chemicals that require "Hazmat".
It is a hit-or-miss, and when a package does get returned, they will attempt a second and third time, until it goes
through. (Checks are random, and often times, familiar items are allowed to pass through, though they should be pulled. They use judgement based on potential threat and harm. Most of these small
device are not an issue, it is the large shipments which always get pulled when they catch them.)
If you do order large shipments, if available, select "Freight". Your delivery will take longer, but it will rarely be delayed in customs. (For these items. Unless the FDA has a national crack-down on these imports.)