Harmonized System

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Section XVI > Chapter 85 > Heading 8511

Explanatory notes

… a high voltage is applied to the central electrode a spark jumps between that electrode and the point or points and is …

Section V > Chapter 25 > Heading 2530

Explanatory notes

… perlite and chlorites, unexpanded 2530.20 ‑ Kieserite, epsomite (natural magnesium sulphates) 2530.90 ‑ Other (A) …

Section XVI > Chapter 84 > Heading 8459

Explanatory notes

… to exact dimensions the cylinder bores of piston engines or pumps.        The operation of boring involves the use of …

Section VI > Chapter 38 > Heading 3802

Explanatory notes

… ion‑exchange or filtering. These products fall in two groups : (I)    Products generally characterised by a very …