… be confused with the precipitated sulphur defined in the Explanatory Note to heading 28.02 . The unrefined sulphurs … which is sulphur (impure or refined) in the form of a finely divided powder obtained by grinding and then sieving, …
… the articles referred to in Items (B), (C) and (D) of the Explanatory Note to heading 90.01 when in a permanent … (a) Optical elements with a temporary mounting provided solely for protection during transport ( heading 90.01 ). …
… ( heading 25.30 ). The heading also excludes : (a) Finely ground blast furnace slag which requires the addition … and concretes ( heading 38.24 ). ° ° ° Subheading Explanatory Note. Subheadings 2523.21 and 2523.29 For the …
… reached, account must be taken of the total iron content expressed as ferric oxide; thus a natural ferrous earth … from dehydrated ferrous sulphate or natural iron oxide. Finely divided powder, usually red but sometimes violet, …
… the use of chipping machines and which have been chipped to extremely accurate dimensions, a process which results in a … or worked on the ends, except as noted in the General Explanatory Note to this Chapter . The heading also …
