Harmonized System

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Section XVIII > Chapter 91

Section XVI > Chapter 85 > Heading 8501

Explanatory notes

… when they are equipped with pulleys, with gears or gear boxes, or with a flexible shaft for operating hand tools. …

Section XVI > Chapter 85 > Heading 8514

Explanatory notes

… for the treatment of metals in a particular gas to prevent oxidation. The furnaces and ovens covered by this group …

Section XVI > Chapter 85 > Heading 8516

Explanatory notes

… solid) substances and gases.  A powder (usually magnesium oxide) with good dielectric and thermal properties holds the …

Section III > Chapter 15

Explanatory notes

… exposure to air they become rancid due to hydrolysis and oxidation. When heated they decompose, giving off an acrid, …

Section XX > Chapter 94