… a chemical process are covered by this heading, as are also natural borates obtained by evaporating complex brines from … (flux for hard solder); as a flux for enamels; in the manufacture of vitrifiable colours, special glass (optical … . Cadmium borate is used as a coating for fluorescent tubes. Cobalt borate is used as a drier; zinc borate as an …
… titanium oxide, chromium oxide) either deriving from the natural starting material (bauxites) or added to improve, … fused grain or to modify the colour. However, mechanical mixtures of artificial corundum and other substances, such … and is very hard. It is used, e.g., as an abrasive, in the manufacture of refractory conglomerates (such as mullite and …
… and stones worked, e.g., by cleaving, sawing, bruting, tumbling, faceting, grinding, polishing, drilling, engraving … splitting along the natural plane of the layers), bruted, tumbled or which have only a small number of polished facets …
… and preparations based thereon 3204.19 - - Other, including mixtures of colouring matter of two or more of the … for colouring rubber, plastics, etc., in the mass. (D) Mixtures of synthetic organic colouring matter with … azo colouring matters are often put up in the form of mixtures of stabilised diazonium salts and couplers which …
… 8405.90 - Parts This heading covers self-contained apparatus and plant for generating any kind of gas (e.g., producer gas, water gas and mixtures thereof, or acetylene) whatever the intended use of … also excludes : (a) Free-piston generators for gas turbines ( heading 84.14 ). (b) Coke ovens (e.g., town gas …
… of steels and other metals or in the form of pipe and tubing for high temperature chemical or petrochemical … at the elevated temperatures prevailing in aircraft turbines where they are used for turbine blades and vanes, …
… - Other These stones are used for the same purposes as the natural precious or semi-precious stones of the two … have essentially the same chemical composition and crystal structure as a particular natural stone (e.g., ruby, … synthetic diamonds produced using the High Pressure, High Temperature method (HPHT), may display a characteristic …
… to form parts of machines, appliances, instruments or apparatus of this Chapter or Section XVI 9013.20 ‑ Lasers, … parts and accessories for lasers, for example, laser tubes, are also classified in this heading. However, this … or drain inspection mirrors, and special mirrors for wind‑tunnel observations). Rear‑view or other mirrors, not …
… materials, usually shaped by extruding or pressing at room temperature, but can be formed by other processes, then … resistance and the vitrification rate vary depending on the structure of tile. These structural features are characterized by the absorption …
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