Harmonized System

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Section XVI > Chapter 84 > Heading 8417

Explanatory notes

… Furnaces and ovens for the roasting, melting or other heat-treatment of ores, pyrites or of metals 8417.20 - Bakery … separate combustion chambers). They are used for the heat treatment (e.g., by roasting, fusion, calcination or … Ovens and furnaces for hardening, annealing or similar heat-treatment of metals. (4)   Cementation ovens. (5)   Bakery …

Section VII > Chapter 39 > Heading 3913

Explanatory notes

… the extract to obtain an impure calcium alginate which on treatment with a mineral acid is transformed into alginic … Natural rubber, which is a high polymer, forms, on chemical treatment, certain substances having the characteristic of … varnishes which after application form a film resistant to atmospheric and chemical deterioration. (b) Rubber …

Section XVI > Chapter 84 > Heading 8445

Explanatory notes

… following processes : (I)   The preparation or preliminary treatment of textile fibres to make them suitable for : (i)  … *    * The heading excludes  : (a)   Machines for the heat‑treatment of cocoons to kill the silkworms ( heading 84.19 …

Section XIII > Chapter 68 > Heading 6806

Explanatory notes

… is obtained from vermiculite (heading 25.30) by heat treatment which causes a very large expansion of the … chlorites, obsidian, etc., similarly obtained by heat treatment. These generally consist of very lightweight spheroidal grains. Perlite activated by heat treatment is in the form of shiny white microlamellar powder …

Section V > Chapter 27 > Heading 2712

Explanatory notes

… the rotating thermometer method (ISO 2207 equivalent to the ASTM D 938 method), of not less than 30 °C, a density at … as determined by the ISO 2137 method (equivalent to the ASTM D 217 method), of less than 350, a Cone Penetration at … as determined by the ISO 2137 method (equivalent to the ASTM D 937 method), of not less than 80.           This …

Section V > Chapter 26 > Heading 2620

Explanatory notes

… of their chemical compounds .  They result from the treatment of ores or intermediate metallurgical products … sulphate. (7)   Impure cobalt oxides resulting from the treatment of silver‑bearing ores. (8)   Spent catalysts … in the form of wastes arising from processing (e.g., heat treatment) of goods containing these metals. (14) Slag, ash …

Section XX > Chapter 94 > Heading 9402

Explanatory notes

… table‑beds and the like for clinical examinations, medical treatment, massage, etc.; beds and seats, e.g., for … or operations, or for use in ear, nose, throat or eye treatment.          It should, however, be noted that the … hinged mattress‑supports specially designed for therapeutic treatment of pulmonary tuberculosis or other diseases. (9)   …

Section XV > Chapter 75

Explanatory notes

… for components such as muffles and retorts used in the heat treatment of steels and other metals or in the form of pipe … Products and articles of nickel may be subjected to various treatments to improve the properties or appearance of the metal, etc. These treatments are generally those referred to at the end of the …

Section XV > Chapter 79

Explanatory notes

… and it can readily be cast. It is resistant to atmospheric corrosion and is therefore used in building …

Section VI > Chapter 28 > Heading 2811

Explanatory notes

… fluoride (fluorite) or on cryolite. It is purified by treatment with potassium carbonate or by distillation (it … liquid (boiling point 18/20 °C); it fumes in a humid atmosphere. In the anhydrous state and in concentrated … or vegetables, the preparation of acid sulphites for the treatment of wood pulp, manufacture of sulphuric acid, or as …