Harmonized System

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Section XV > Chapter 81 > Heading 8112

Explanatory notes

… except when it is in the form of a precious stone (e.g., emerald) ( Chapter 71 ). The main commercial methods of extracting this metal are : (1)   High temperature electrolysis of a mixture of beryllium … * Beryllium is a steel‑grey metal, very light and hard but extremely brittle. It can only be rolled or drawn under very …

Section VI > Chapter 38 > Heading 3811

Explanatory notes

… preparations which increase the resistance of fuels to premature ignition and thus prevent knocking. They are … gasoline (petrol) to prevent the formation of ice in fuel systems.       (d)   Detergents . Preparations used to keep …

Section VI > Chapter 29 > Heading 2939

Explanatory notes

… - - Levometamfetamine, metamfetamine (INN), metamfetamine racemate and their salts 2939.49 - - Other              - … with morphine. Crystals; used as a sedative in replacement of morphine. (6)   Dihydrocodeine (INN), hydrocodone …

Section VII > Chapter 39 > Heading 3904

Explanatory notes

… For the classification of polymers (including copolymers), chemically modified polymers and polymer blends, see the … fabrication of covers, ducts, tank linings and many other items of chemical plant equipment. PVC floor tiles are also …

Section XIII > Chapter 69 > Heading 6907

Explanatory notes

… flags and tiles are more especially intended for fixing by cement, adhesive or by other means to the surface of … materials, usually shaped by extruding or pressing at room temperature, but can be formed by other processes, then … frieze, angle, corner or other fitting tile pieces employed as complementary elements for finishing off the …

Section XIII > Chapter 70 > Heading 7003

Explanatory notes

… of the table to determine its thickness. The crucible is emptied in front of a heavy metal roller which runs on the … the molten glass is passed between rollers from which it emerges either as a continuous ribbon or in sheets or … building purposes. Wired glass is almost always obtained by embedding a network of steel wire in the soft glass while it …

Section XV > Chapter 73 > Heading 7302

Explanatory notes

… (cross‑ties) are used to support the rails and keep them parallel.        They are usually pressed into final shape after rolling, but they may also be assembled by welding or riveting several elements together. They normally have a cross‑section in the …

Section XV > Chapter 72 > Heading 7208

Explanatory notes

… Descaling, pickling, scraping and other processes to remove the oxide scale and crust formed during the heating … similar treatments. (4)   Artificial oxidation (by various chemical processes, such as immersion in an oxidising …

Section VI > Chapter 38 > Heading 3822

Explanatory notes

… are used in the evaluation of physical, biophysical or biochemical processes and states in animals and humans; their …

Section XVI > Chapter 85 > Heading 8515

Explanatory notes

… can be distinguished from soldering by the melting point temperature of filler metals used.  In brazing it is … which, by reason of their special equipment (for example, a system for feeding in solder wire), are identifiable as …