For international shipping, the custom is a very strict role. They are always inspecting parcels in bulk instead of one by one. When they find one hazardous article in a bulk large carton and happened one of our parcels (despite we are normally products) are also in this cartoon, then they will stop approving the large carton and take them aside. Next step, they will put them a more advanced inspection, they will open the carton and inspect them one by one. For this period, it will take very long time, that is why the tracking information stays still without moving.