… pearls : 7101.21 - - Unworked 7101.22 - - Worked The pearls classified in this heading are, like mother of pearl, the … The layers of carbonate cause optical interference and diffraction which produce the characteristic nacreous lustre …
… lamellar shape can be seen by the naked eye or through a magnifying glass in the case of flakes, but a microscope is … salts, tin disulphides, etc. ( Chapter 28 , or Chapter 32 if in the form of prepared paints). (b) Powders or flakes, …
… acid, which is principally used as a fertiliser and, even if pure, falls in heading 31.02 or 31.05 . (A) ACYCLIC … diatrizoic acid and its salts , used as opacifiers in radiography. Some of these compounds are known in …
… to be flown without a pilot on board, other than those specified in heading 88.01. Unmanned aircraft may be … of cargo or passengers, aerial photography, agricultural or scientific work, rescue duties, fire-fighting, surveillance, …
… switchboards or panel lights, and also certain common magnifying glasses. The heading also includes blanks … strips, lumps or slabs. The articles remain here even if framed, set in a mounting or backed with a reflecting …
… both the following conditions : (i) They must be identifiable as being suitable for use solely or principally … (5) Armour plates, worked to such an extent that they are identifiable as parts of the vehicles of this heading. (6) …
… , for example, land and sea mines, depth charges, hand and rifle grenades, aerial bombs. (E) Harpoons , whether … : (a) Propellant powders and prepared explosives, even if put up in forms ready for incorporation in munitions ( …
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