Harmonized System

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Section XV > Chapter 74

Explanatory notes

… to drive off excess sulphur and smelted in a furnace to produce copper matte or regulus. In some cases the … a converter to eliminate most of the iron and sulphur and produce “blister copper” (so‑called because it has a rough … Explanatory Note to heading 74.01). * *    * Copper is very ductile and malleable; it is, after silver, the best …

Section VIII > Chapter 41

Explanatory notes

… further tanning before finishing and are not considered products of headings 41.04 to 41.06. Hides and skins with … after tanning is known as “ crust ” or “crust leather ”.  During the crusting procedure, a fat-liquor or oil may be …

Section VI > Chapter 36 > Heading 3601

Explanatory notes

… These powders are mixtures, the combustion of which produces a large volume of hot gases. These gases generate a … In the case of propellent powders for rockets, combustion produces a constant pressure and the escape of gases through … or blasting grade nitrocellulose, together with other products and, in particular, with stabilisers such as …

Section XVI > Chapter 84 > Heading 8456

Explanatory notes

… on semiconductor materials. Examples of the foregoing products are (1) laser-beam machine tools which drill … and the tool) by sudden electrical discharges of very short duration at the rate of several hundred thousand cycles per …

Section XVI > Chapter 84 > Heading 8414

Explanatory notes

… however, there are certain special types, particularly for producing high vacua, such as diffusion pumps (the pump … for facilitating boiling, distilling or evaporating at reduced pressure; for evacuating electric lamps or tubes, … first kind may act as air extractors or as blowers (e.g., industrial blowers used in wind tunnels). They consist of a …

Section XV > Chapter 72 > Heading 7216

Explanatory notes

… or cold-finished : 7216.61 - - Obtained from flat-rolled products 7216.69 - - Other               - Other : 7216.91 - … beams). Angles, shapes and sections are usually produced by hot‑rolling, hot‑drawing, hot‑extrusion or …

Section X > Chapter 48 > Heading 4805

Explanatory notes

… however, certain special papers and paperboards or special products ( headings 48.06 to 48.08 and headings 48.12 to … of the pulps used (e.g., recycled waste), the method of production (e.g., mechanical or chemical) or, if the pulps … manufacture. Felt paper and paperboard are generally of a dull blue grey colour with coarsely fibrous surface and …

Section VII > Chapter 39 > Heading 3913

Explanatory notes

… ) by maceration in an alkaline solution. It may be produced by precipitating the extract with a mineral acid or … for example, the pharmaceutical, food, textile and paper industries.        These products may contain preservatives (e.g., sodium benzoate) …

Section VI > Chapter 28 > Heading 2831

Explanatory notes

… not been isolated in the free state. They are obtained by reducing (with zinc powder) solutions of hydrogen sulphites … reducing agents employed in the chemical, textile or sugar industries, mainly for bleaching. The most important is … crystals. It is used in organic synthesis, in the dyeing industry and for paper‑making. It deteriorates rather …

Section XVI > Chapter 84 > Heading 8446

Explanatory notes

… type This heading covers weaving machines for the production of fabrics by weaving, using textile (including … to vary the order in which the warp yarns are raised and so produce a certain variation in the weave. More complex looms … the shuttles (or the bobbins in the shuttles), thus introducing wefts of different colours or different yarns; …