Harmonized System

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Section XVIII > Chapter 90 > Heading 9013

Explanatory notes

… noted that optical instruments and appliances can fall not only in headings 90.01 to 90.12 but also in other headings … light beams which are produced inside the lasing medium are repeatedly reflected and amplified in such a way that a … (visible or invisible) is emitted from one end which is partly transparent.       In addition to the lasing medium, …

Section VI > Chapter 38 > Heading 3812

Explanatory notes

… sometimes also serve as plasticisers. This heading covers only such products which are mixtures.         These preparations are generally based on organic products (diphenylguanidine, … rubber processing, though known as chemical plasticisers (generally heading 38.24 ). (e)   Polymers of Chapter 39 . …

Section V > Chapter 26 > Heading 2621

Explanatory notes

… include : (1) Ash and clinker of mineral origin produced primarily from burning coal, lignite, peat or oil in utility … highway ramps and bridge abutments. It includes : (a) Fly ash – finely divided particles entrained in furnace flue gases and …

Section XV > Chapter 78

Explanatory notes

… lead and its alloys, and certain articles thereof. Lead is mainly extracted from galena, a natural lead sulphide ore … The crushed ore, after concentration by flotation, is generally roasted or sintered, and is then reduced by … During the roasting or sintering process, the sulphide is largely converted into oxide; in the smelting process, the …

Section XVI > Chapter 84 > Heading 8407

Explanatory notes

… It includes such engines for motor vehicles. These engines generally have the following elements : cylinder, piston, connecting-rod, crank shaft, flywheel, inlet and exhaust valves, etc. They make use of … and contact breakers) synchronised with the motor, for supplying high tension current. In the more common types the …

Section VI > Chapter 29 > Heading 2907

Explanatory notes

… Naphthols and their salts 2907.19 - - Other               - Polyphenols; phenol-alcohols : 2907.21 - - Resorcinol and … replacement of two or more hydrogen atoms results in polyhydric phenols (polyphenols). This substitution in its …

Section XV > Chapter 72 > Heading 7202

Explanatory notes

… 7202.60 - Ferro-nickel 7202.70 - Ferro-molybdenum 7202.80 - Ferro-tungs ten and … in that they contain a smaller proportion of iron which merely acts as a “solvent” for large proportions of alloy … may contain 2 % or less of carbon. Ferro-alloys are not normally used for rolling, forging or other working, at …

Section VII > Chapter 40 > Heading 4010

Explanatory notes

… - Conveyor belts or belting : 4010.11 - - Reinforced only with metal 4010.12 - - Reinforced only with textile … heading covers conveyor or transmission belts and belting, wholly of vulcanised rubber, or of textile fabric … (other than belts or belting wholly of vulcanised rubber) generally consist of a carcass made up of several layers of …

Section XI > Chapter 51 > Heading 5101

Explanatory notes

… com posed of the protein keratin, and have a characteristic scaly surface. They are elastic, extremely hygroscopic (absorb moisture from the air) and, as … slipe wool or skin wool). Uncarded and uncombed wool is generally in the form of : (A)  Greasy, including …

Section XI > Chapter 52 > Heading 5203

Explanatory notes

… the cotton fibres, lay them more or less parallel, and entirely or largely free them from any extraneous matter they may still … in the form of combing waste; only the longer fibres, lying parallel, remain. The slivers, whether or not combed, …

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