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If your package is stuck in the customs, please do not worry.
You can contact your local customs first to see what document they need to get the package through. If it is about your personal information, you can just offer it to them to get the package. If it is about the invoice of the package or certificate like CE, ROHS and so on, you can contact us and we can help you get it. After we send that to you, you can just offer it to your customs to get the package.
Please do remember not to offer the real invoice to them without contacting us. Or you may need to pay high tax to get the package.
Any other questions please feel free to contact us on https://help.tinydeal.com/contact-us. And we would answer you within 24 hours.