Harmonized System

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Section V > Chapter 25 > Heading 2525

Explanatory notes

… thickness, covered with earth (“books”). (B)  Mica sheets , obtained by rifting cobbed and trimmed books. The sheets … irregular polygons, like the crystals from which they were obtained, and their edges are roughly trimmed and bevelled. … 200 to 750 micrometres (microns). (C)  Mica splittings , obtained by rifting sheet mica. Like the sheets from which …

Section XV > Chapter 74 > Heading 7407

Explanatory notes

… to Section XV . The products of this heading are usually obtained by rolling, extrusion or drawing, but may also be obtained by forging (whether with the press or hammer). They … hollow profiles including finned or gilled tubes and pipes obtained by extrusion. However, tubes and pipes to which …

Section XV > Chapter 81 > Heading 8102

Explanatory notes

… 8102.94 - - Unwrought molybdenum, including bars and rods obtained simply by sintering 8102.95 - - Bars and rods, other than those obtained simply by sintering, profiles, plates, sheets, … - - Waste and scrap 8102.99 ‑ ‑ Other Molybdenum  is mainly obtained from the ores molybdenite (molybdenum sulphide) and …

Section V > Chapter 27 > Heading 2707

Explanatory notes

… This heading covers : (1)   The oils and other products obtained by the distillation of high temperature coal tar in … and products with a predominance of aromatic constituents obtained by the distillation of low temperature coal tar or … defined compounds in the pure or commercially pure state obtained by further fractionation or by other processing of …

Section VI > Chapter 38 > Heading 3803

Explanatory notes

… not refined. Tall oil (sometimes known as liquid rosin) is obtained from the black liquor left over from the … a frothy mass forms on its surface. Crude tall oil is obtained when this frothy mass is heated and acidified, … to the nature of the wood. Refined tall oil may be obtained by distilling crude tall oil under very low …

Section V > Chapter 25 > Heading 2508

Explanatory notes

… aluminium silicates used as refractories. (4)   Mullite , obtained by heat treatment of sillimanite, kyanite or … heat. (5)   Chamotte earth , also called “fire‑clay grog”, obtained either by crushing fire‑clay bricks or by crushing … which consists of quartzose earth containing clay or may be obtained by mixing clay with ground quartz or quartz sand. …

Section V > Chapter 25 > Heading 2523

Explanatory notes

… cement 2523.90 - Other hydraulic cements Portland cement is obtained by firing limestone containing in its natural … process, semi‑finished products known as clinkers are obtained. These clinkers are subsequently ground to produce … 2523.21 and 2523.29, “Portland cement” means cement obtained by grinding Portland clinker with the possible …

Section IV > Chapter 23 > Heading 2309

Explanatory notes

… heading includes products of a kind used in animal feeding, obtained by processing vegetable or animal materials to such … the original material, for example, in the case of products obtained from vegetable materials, those which have been … concentrate and green fraction leaf protein concentrate, obtained from alfalfa (lucerne) juice by heat treatment. (C) …

Section VI > Chapter 33 > Heading 3302

Explanatory notes

… these substances form the basis of the mixture. Products obtained by the removal of one or more of the ingredients of … this heading. Examples of such products are menthone oil (obtained by freezing peppermint oil, followed by treatment … alia , 63 % menthone and 16 % menthol), white camphor oil (obtained from camphor oil by freezing and distilling to …

Section VII > Chapter 39 > Heading 3913

Explanatory notes

… extract with a mineral acid or by treating the extract to obtain an impure calcium alginate which on treatment with a … for protective clothing. (c)  Oxidised rubber , obtained by oxidising heated rubber in the presence of a … used in certain types of varnishes. (d) Cyclised rubber , obtained by treating rubber with, e.g., sulphuric, …