Harmonized System

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Section VI > Chapter 29 > Heading 2915

Explanatory notes

… group. In theory, the heading also covers the ortho-acids (RC(OH) 3 ) since these may be regarded as hydrated carboxylic acids (RCOOH + H 2 O = RC(OH) 3 ). In practice, however, these do …

Section XVIII > Chapter 90 > Heading 9032

Section XVI > Chapter 84 > Heading 8407

Explanatory notes

… rotary internal combustion piston engines (+) . 8407.10 - Aircraft engines               - Marine propulsion engines : … and exhaust valves, etc. They make use of the expansion force of a charge of inflammable gas or vapour burned inside …

Section XVIII > Chapter 90 > Heading 9006

Section XVI > Chapter 84 > Heading 8418

Section VI > Chapter 28 > Heading 2825

Explanatory notes

… Copper oxides and hydroxides 2825.60 ‑ Germanium oxides and zirconium dioxide 2825.70 ‑ Molybdenum oxides and hydroxides … and non‑hydrated manganese oxides ( heading 28.20 ). (13)   Zirconium dioxide (zirconia) (ZrO 2 ), not to be confused … ( heading 26.15 or 71.03 ), which is a crystallised natural zirconium silicate.          The artificial oxide is …

Section XVIII > Chapter 90 > Heading 9018

Section XVI > Chapter 84 > Heading 8413

Explanatory notes

… POSITIVE DISPLACEMENT PUMPS These use the linear suction or forcing action of a piston or plunger driven within a … by suction and discharged against atmospheric pressure. In “force” pumps, the compression stroke is used, in addition to … in a magnetic field). (4)    Machines using the suction or forcing action of two pistons , such as those pumps designed …

Section XVI > Chapter 84 > Heading 8471

Section XIII > Chapter 69 > Heading 6909

Explanatory notes

… chemical or other technical uses : 6909.11 - - Of porcelain or china 6909.12 - - Articles having a hardness … covers in particular : (1)   Laboratory wares (e.g., for research or industrial use) such as crucibles and crucible … other than graduated kitchen measures); laboratory dishes, mercury troughs; small tubes (e.g., combustion tubes, …