Harmonized System

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Section XV > Chapter 73 > Heading 7302

Explanatory notes

… track construction material, whether of normal or narrow gauge. (1)   Rails for railways or tramways are hot‑rolled … rods; the spaces between these rods are designed to engage the teeth of the cogged wheel beneath the locomotive. … Assembled track, turntables, platform buffers and loading gauges ( heading 86.08 ). …

Section VI > Chapter 29 > Heading 2927

Explanatory notes

… are products of general formula RN 2 + X –  where R is an organic radical and X –  is an anion, for example : (a)  … dyes. (2)   Compounds of general formula RN 2 where R is an organic radical, for example : (a)  Diazomethane . (b) Ethyl …

Section XXI > Chapter 97 > Heading 9705

Section XVI > Chapter 84 > Heading 8457

Explanatory notes

… workpiece either : (a)  by automatic tool change from a magazine or the like in conformity with a machining … of Interpretative Rule 3 (c) unless, of course, they can be regarded as multi‑station transfer machines , in which the … devices such as pallet changers, systems of pallet magazines or tool magazine changers. (B) UNIT CONSTRUCTION …

Section XVI > Chapter 84 > Heading 8402

Explanatory notes

… Steam boilers may be heated by means of a solid, liquid or gaseous fuel, or by electricity. The desire to obtain a more … of the boiler is traversed by tubes through which the flue gases are conducted. (2)   Watertube boilers, in which a …

Section VI > Chapter 29 > Heading 2912

Explanatory notes

… Obtained by catalytic oxidation of methanol. Colourless gas with a penetrating odour, highly soluble in water. Its … as a stabiliser.       Methanal has many applications; in organic synthesis (dyestuffs, explosives, pharmaceutical … miscible with water, alcohol and ether. Used in organic synthesis to make plastics, varnishes, or in …

Section VI > Chapter 29 > Heading 2909

Explanatory notes

… cyclic ethers. The first ether in the acyclic series is gaseous, but others are volatile liquids with a …

Section XI > Chapter 58 > Heading 5804

Explanatory notes

… bedspreads or similar household furnishings, veils, ladies’ garments, in embroidery, etc. They are generally of silk, …  : (a)   Loosely woven fabrics of Chapters 50 to 55 , and gauze of heading 58.03 . (b)   Nets or netting of heading … stitch, particularly at the solid parts. Unlike tulles, gauzes or other loosely woven fabrics, lace does not have …

Section XVIII > Chapter 90 > Heading 9017

Explanatory notes

… instruments 9017.30 ‑ Micrometers, callipers and gauges 9017.80 ‑ Other instruments 9017.90 ‑ Parts and … includes such instruments used for course plotting in navigation. (2) Drafting machines generally using a system …

Section XVIII > Chapter 90 > Heading 9025

Explanatory notes

… after the inventor (e.g., Baumé, Brix, Balling, Bates, Gay‑Lussac, Richter, Tralle, Sikes, Stoppani, etc.). … these thermometers the expansible medium (liquids, vapours, gases) develops a pressure and actuates a Bourdon tube or … the atmospheric pressure; similar instruments (pressure gauges) for measuring the pressure of liquids or gases are …