Products sent to countries outside the UK and EU are subject to import duty. This is the responsibility of the customer.
We make every effort to ensure that the required commercial invoices are as accurate and correct as possible but it is inevitable that Customs will occasionally delay import release from time to time.
It will sometimes speed things up if we have your tax identification number and this can be inserted in the VAT/tax id field when completing an order.
The product harmonization code we use for all our products is 903300 and this can be used when estimating the import duty.