… They have an optical system which consists essentially of a light source, reflector, condenser and projection lens. The … usually at the same rate as the film was taken, and the light source is cut off when the film is being moved through the projection gate. The light source in cinema projectors is commonly an electric …
… ( heading 84.79 ) or other similar machines. Although they might be considered to be for the treatment of the materials … tools, e.g., log cross‑cut sawing machines with right‑toothed blades, fret saws and vertical or horizontal …
… ALKALI METALS The five alkali metals are soft and rather light. They decompose cold water; they deteriorate in air, forming hydroxides. (1) Lithium . This is the lightest (specific gravity 0.54) and hardest of the group. … after cutting. It is preserved in mineral oil or in airtight welded tins. Sodium is obtained by electrolysing …
… fatty acid or a mixture of fatty acids containing at least eight carbon atoms. In practice, part of the fatty acids … soaps, containing small quantities of phenol, cresol, naphthol, formaldehyde or other bactericidal, …
… usually consist of a chemical drier (lead borate, zinc naphthenate, zinc oleate, manganese dioxide, cobalt … or sulphate turpentine, white spirit, etc., (e.g., calcium naphthenate or cobalt naphthenate in white spirit) with or without drying oil …
WCO Trade Tools provides essential information to support your trade activity.
