… (4) Mercury sulphides . Artificial mercury sulphide (HgS) is black. When sublimed or heated with alkali … and of standard electric cells. (b) Mercuric sulphate (HgSO 4 ). White, anhydrous and crystalline masses, turning …
… precious or semi-precious stones of the two preceding headings. (A) Synthetic precious and semi-precious stones . … and streaks. The provisions of the Explanatory Notes to headings 71.02 and 71.03, especially as regards the working … here. Subheading 7104.99 The Explanatory Note to subheadings 7103.91 and 7103.99 applies, mutatis mutandis , to …
… they have been cut to any other shape, they fall in later headings of this Chapter (for example, 48.17 , 48.21 or … have been otherwise processed, are excluded (generally, headings 48.06 to 48.11 ). In addition to hand‑made paper …
… or multiple‑cutter milling machines) are classified in headings 84.59 to 84.61 . The automatic tool change … automatically. Such machines are to be classified in headings 84.59 to 84.61 in accordance with Note 3 to Section … Soldering, brazing or welding machines and apparatus of headings 84.68 and 85.15 . …
