… elements of glass not optically worked. ‑ Objective lenses : 9002.11 ‑ ‑ For cameras, projectors or photographic enlargers or reducers 9002.19 ‑ ‑ … of ophthalmic lenses (which when mounted constitute spectacles, lorgnettes or the like of heading 90.04 ), this …
… 2833.40 ‑ Peroxosulphates (persulphates) (A) SULPHATES Subject to the exclusions mentioned in the introduction to … air and dissolving in water with a fall in temperature. The decahydrate (Na 2 SO 4 .10H 2 O) is known as Glauber’s salt. …
… 91.11 ‑ Watch cases and parts thereof. 9111.10 ‑ Cases of precious metal or of metal clad with precious metal 9111.20 … and the bushings . (3) The dome , the inner cover protecting the movement (does not exist in ordinary … the glass. The edge for holding the glass in place is more especially referred to as the groove . (5) The bottom , …
… by a shuttle) which is immediately beaten up against the preceding weft by the reed; the raising or lowering of the … a certain variation in the weave. More complex looms can execute more complicated weaves. For example, some looms have a special system for controlling the raising of the warp …
… thermal reduction or (except in the case of silicate ores) electrolysis. (I) Thermal reduction is effected by heating the oxide or silicate with coke in … distils over into condensers where most of the metal is collected as “spelter”. This impure zinc may be used …
… - - Of pine ( Pinus spp. ), of which the smallest cross-sectional dimension is 15 cm or more 4403.22 - - Of pine ( … Other : 4403.91 ‑ ‑ Of oak ( Quercus spp. ) 4403.93 - - Of beech ( Fagus spp .), of which the smallest cross-sectional … of the most recent growths (sapwood), have been removed for economy in transport or to prevent decay. The principal …
… 2804.90 - Selenium (A) HYDROGEN Hydrogen is obtained by electrolysing water, or from water‑gas, coke‑oven gas or … for their lack of chemical affinity and for their electrical properties ‑ particularly that of emitting …
… and shape suitable for incorporation in vehicles, aircraft, spacecraft or vessels 7007.19 - - Other - … the types of glass described below and does not refer to protective glass such as ordinary wired glass and selective absorption glasses (e.g., anti-glare glass, X-ray …
… based on one of the two following types of reaction : (A) Electrolysis of fused magnesium chloride mixed with fluxes … metal chlorides or fluorides. The separated magnesium collects on the surface of the bath around the cathodes and …
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