Duty Relief: What operations are allowed in a customs warehouse?
You can carry out some repairs or processing to your goods in a customs warehouse without using inward processing, this is known as the usual forms of handling.
There are three general "themes" that are allowed in a customs warehouse. They are:
preserve your goods in storage
improve their presentation for future sales
prepare your goods for distribution or resale
Examples of usual forms of handling
Unless specified below, handling cannot change the 8 digit tariff commodity code.
Preserving your goods in storage
Ventilation, spreading-out, drying, removal of dust and simple cleaning operations
Repairs of packing
Simple repairs of damage caused during transport or storage that affects simple operations
Application and removal of protective coating for transport
Stocktaking, sampling and weighing goods
Removal of damaged or contaminated components
Raising or lowering the temperature, without further treatment or distillation process (usually can result in a different commodity code, but check with local customs)
Conservation by means of pasteurisation, sterilisation, irradiation or adding preservatives
Treatment against parasites
Improving their presentation for future sales
Stemming, pitting and rehydration of fruits
Dehydration of fruits (usually can result in a different commodity code, but check with local customs)
Desalination, cleaning and butting of hides
Addition of goods to meet technical standards, including addition or replacement of accessory components (usually can result in a different commodity code, but check with local customs)
Dilution or concentration of fluids, without further treatment or distillation process (usually can result in a different commodity code, but check with local customs)
Mixing between the same kind of goods, without changing their nature, to get a constant quality or a quality requested by the customer
Mixing of gas or fuel oils not containing biodiesel with gas or fuel oils containing biodiesel (maybe classified in chapter 27 of your national tariff) without changing the nature of the goods, to get a constant quality or a quality requested by the customer (usually can result in a different commodity code, but check with local customs)
Mixing of gas or fuel oils with biodiesel so that the mixture contains less than 0.5% by volume of biodiesel, and mixing of biodiesel with gas or fuel oils so that the mixture contains less than 0.5% by volume of gas or fuel oils
Simple dividing or size cutting out of goods
Denaturing (usually can result in a different commodity code, but check with local customs)
Preparing your goods for distribution or resale
Sorting, mechanical filtering and sifting
Simple testing, adjusting and regulating to meet technical standards
Putting into the working order of machines, apparatus and vehicles
Packing, unpacking, change of packing, decanting and simple transfer into containers (usually can result in a different commodity code, but check with local customs)
Affixing, removal and altering of marks, seals, labels, price tags or other similar distinguishing signs
Cutting up and breaking down dried fruits or vegetables
Anti-rust treatment
Reconstruction of the goods after transport
Raising the temperature, so the goods can be transported
Electrostatic treatment, un-creasing or ironing of textiles
Dulling of pipe fittings to prepare the goods for certain markets
You can use other usual forms of handling not in this list if they do not change the nature or improve the performance of the goods. You may have to consult the national authorities, too.
If they do, you will need to put the goods into inward processing.