Harmonized System

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Section VI > Chapter 28 > Heading 2806

Explanatory notes

… OF NON‑METALS GENERAL Acids contain hydrogen which can be wholly or partly replaced by metals (or by ions with … formed, respectively, by metal oxides or hydroxides; these generally fall in sub‑Chapter IV (e.g., metal oxides, hydroxides and …

Section XVI > Chapter 84 > Heading 8484

Explanatory notes

… core of asbestos (or sometimes felt, cardboard or other non‑metallic material) sandwiched between two metal sheets. or  … ; but if the set also included a rubber gasket it would fall in this heading. (C) MECHANICAL SEALS Mechanical seals …

Section XVIII > Chapter 90 > Heading 9023

Explanatory notes

… bodies, of crystals, etc. Models of this kind are usually made of plastics or of compositions based on … instruction in technical schools). (6)   Models, etc., for artillery training, used in training courses held indoors. … houses, etc. (of plaster, paperboard, wood, etc.). (9)   Small scale demonstrational models (of aircraft, ships, …

Section VI > Chapter 31 > Heading 3105

Section VI > Chapter 33 > Heading 3302

Explanatory notes

… or drink industries 3302.90 - Other This heading covers the following mixtures provided they are of a kind used as raw … are menthone oil (obtained by freezing peppermint oil, followed by treatment with boric acid, to remove most of the … camphor oil (obtained from camphor oil by freezing and distilling to remove camphor and safrole and containing 30 …

Section XIII > Chapter 70 > Heading 7009

Explanatory notes

… to glass, one surface of which has been coated with metal (usually silver, sometimes platinum or aluminium) to give a clear and brilliant reflection. In the silvering method a dilute … the silver salts forms a lasting and brilliant deposit of metallic silver. In the platinum deposition process, a …

Section XIII > Chapter 68 > Heading 6812

Explanatory notes

… includes mixtures of asbestos with magnesium carbonate, cellulose fibres, sawdust, pumice stone, talc, plaster, … Note to heading 25.24. Asbestos paper, board and felt are usually obtained by crushing the fibres into pulp which is … fibres can be readily distinguished. They may be in rolls, sheets or plates, or may be cut to shape in the form …

Section VI > Chapter 28 > Heading 2815

Explanatory notes

… form of flakes or lumps. The pure product is presented in pellets or cubes in glass jars. Solid sodium hydroxide … and very soluble in water; it must therefore be kept in well‑sealed steel containers. It is a powerful base with … by elimination of the lignin, manufacture of regenerated cellulose, mercerising of cotton, tantalum or niobium …

Section VIII > Chapter 43 > Heading 4302

Explanatory notes

… sewn together without the addition of other materials usually in rectangles (including squares), trapeziums or … Explanatory Note to Chapter 41). The skins so treated may generally be distinguished from raw skins by their softness … 43.01 (such as pony skins, calfskins, and sheepskins), fall in this heading if tanned or dressed. The assemblies of …

Section XVIII > Chapter 90 > Heading 9012

Explanatory notes

… normal type of electron microscope is an assembly of the following devices usually enclosed in a common frame as a unit : (1) A device … objective and projector. There is usually also a further so‑called field “lens”, between the objective and the …