… with, plastics. Products not meeting the requirements of subparagraph (2) or (3) above usually fall in Chapter 39 . … entitled “ Plastics and textile combinations ”, penultimate paragraph). This heading also covers “textile fabrics …
… heat treatment. These generally consist of very lightweight spheroidal grains. Perlite activated by heat treatment is in … by calcining a mixture of clays with other materials (e.g., sulphite lye). Foamed slag is made by adding small amounts …
… with acids or other solvents, to remove impurities such as sulphur, arsenic, copper, lead, iron and tungsten. (III) … hammered, rolled or extruded. Tin is very resistant to atmospheric corrosion but is attacked by concentrated acids. …
… clocks (wound, for example, by variations of temperature or atmospheric pressure); alarm clocks; centre‑seconds clocks; … for electric clock systems as used in towns, factories, telephone exchanges, stations, airports, banks, hotels, …
… by immersing unsized and unloaded paper of good quality in sulphuric acid for a few seconds. The action of the acid … parchment paper”) are made directly from pulp (usually sulphite pulp) by reducing the fibres to a state of fine …
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