Harmonized System

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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 XVII > Chapter 88 > Heading 8806

Explanatory notes

… control by a remote operator.  They may also incorporate Global Navigation Satellite System (GNSS) receivers, (e.g., … and flying back to the take-off point and systems for obstacle avoidance, object recognition and tracking function . Unmanned aircraft …

Section XIII > Chapter 70 > Heading 7014

Explanatory notes

… or in display signs, or as simple reflectors for cycles, automobiles, etc. These articles, which are usually convex, … as optical working. Articles of the heading are generally obtained by simple moulding or pressing or by cutting from …

Section XVIII > Chapter 90 > Heading 9027

Explanatory notes

… holder in which the substance to be analysed is placed, an observation eyepiece and a measuring scale.        In … They consist essentially of a system of prisms, observing and reading eyepieces, and a device for …        This group includes : spectroscopes for the observation of spectra; spectrographs for recording the …

Section VI > Chapter 28 > Heading 2801

Explanatory notes

… (28.01). Chromium........ Cr 24 Base metal (81.12). Cobalt................ Co 27 Base metal (81.05). … Nickel................. Ni 28 Base metal (Chapter 75). Niobium............ Nb 41 Base metal (81.12). … derivatives. (B) CHLORINE Chlorine is usually obtained by electrolysis of alkali chlorides, especially …

Section VI > Chapter 32 > Heading 3201

Explanatory notes

… roots, etc.) previously ground or shredded. The liquid obtained is filtered or centrifuged and then concentrated … sometimes treated with sulphites, etc. The extracts thus obtained are liquid but may be further concentrated to paste … oak, chestnut, quebracho, pines, wattle (mimosa), sumach, myrobalans, vallonia, gambier, mangrove or divi-divi. …

Section VI > Chapter 29 > Heading 2934

Explanatory notes

… acids. They include naphthosultam-2,4-disulphonic acid , obtained from periacid, and which is used for the … acid). (3) Thiophen . Found in coal and lignite tars. Also obtained synthetically. A mobile, colourless liquid with a …

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 XV > Chapter 72 > Heading 7202

Explanatory notes

… 7202.92 - - Ferro-vanadium 7202.93 - - Ferro-niobium 7202.99 - - Other Ferro‑alloys are defined in Note 1 … of alloying elements to steel or pig iron in order to obtain special qualities, generally in those cases where the … primary forms, in granules or powder forms or in forms obtained by continuous casting (e.g., billets). …

Section VI > Chapter 29 > Heading 2916