Harmonized System

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Section XIII > Chapter 69 > Heading 6901

Explanatory notes

… are : (1)   High alumina refractories based either upon bauxite, mullite or corundum (sometimes mixed with clays) or …

Section V > Chapter 26 > Heading 2602

Explanatory notes

… covered by this heading are : (a)   Braunite, manganese oxide. (b)   Rhodochrosite (or dialogite), manganese carbonate. (c)   Hausmannite, saline manganese oxide. (d)   Manganite, hydrated manganese oxide. (e)   Psilomelane , hydrated manganese dioxide. (f)   Pyrolusite (or polianite), manganese dioxide. …

Section XVI > Chapter 84 > Heading 8467

Explanatory notes

… their full weight during operation they may be used with auxiliary supporting devices (e.g., tripods, jacklegs, … not portable) fitted with a base plate or other device for fixing to the wall, bench, floor, etc., those with … piston engine or a separate electric motor with a flexible shaft; the tool holder is classified in heading …

Section XVIII > Chapter 90 > Heading 9030

Explanatory notes

… an appreciable time (e.g., 24 hours) do not require any auxiliary amplifiers, etc., but incorporate a very light … amplifiers, a sweeping or scanning system and other auxiliary devices and, sometimes, an electronic switch. …

Section VI > Chapter 38 > Heading 3825

Explanatory notes

… ELSEWHERE SPECIFIED OR INCLUDED (1)         Alkaline iron oxide for the purification of gas (in particular, coal-gas) containing impure ferric oxide, obtained as a by-product from one of the processes of the extraction of aluminium from bauxite.  These by-products also contain sodium carbonate, …

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… sulphide. White paste or powder often containing zinc oxide or other impurities. It is used, either pure or mixed … impurities. Used either alone, or treated with arsenous oxide or with lime for de‑hairing hides. Used also as a … a mixture of sulphur and ammonium chloride with a tin oxide or amalgam. Golden yellow flakes or powder, insoluble …

Section VI > Chapter 38 > Heading 3802

Explanatory notes

… treatment of certain vegetable or mineral substances (clay, bauxite, etc.) in the presence of natural impurities or … at a high temperature in the presence of steam, carbon dioxide or other gases (gas activation), or by dry … vegetable or mineral oils, fats or waxes. (4) Activated bauxite . Bauxite is usually activated by means of alkalis …

Section XVIII > Chapter 90 > Heading 9028

Explanatory notes

… meters, the heading also includes special meters such as maximum, prepayment, price‑calculating, etc., meters. Supply … centrally guided, is thus made to nutate around an inclined axis which engages a cranked arm attached to the driving … energy supplied at two or more different rates). (3)   Maximum meters (indicating the maximum value of the average …

Section XIII > Chapter 70 > Heading 7019

Explanatory notes

… Glass fibres have the following properties : they are less flexible than vegetable or animal textile fibres (glass yarns … strong (stronger than any of the textile fibres of Section XI, and in terms of tensile strength they are stronger than …

Section XVI > Chapter 84 > Heading 8481