There are generally several cases of being detained by the customs: 1, express mail directly imported to the mainland, the value of which exceeds the tax collection point and needs to be taxed, has not been paid. In this case, the goods can generally be released by paying taxes and fees. 2. Where the goods involve intellectual property rights or patents, they shall be detained for inspection. This requires a formal purchase invoice or authorization, and the person who provides the certificate can release it.
The courier company will generally notify the recipient to handle it.