The Ministry of Supply and Trade in Yemen issued its decree No.263 for 1999, dated October 1, 1999 amending the structure of the classes as follows:
CLASS 1
1.Chemicals used in industry, science and photography, as well as agriculture, horticulture and forestry; chemical substances for preserving foodstuffs; unprocessed artificial resins, unprocessed plastics; adhesives used in industry.
2.Tempering and soldering preparations; fire extinguishing compositions.
3.Tanning substances.
4.Manures.
CLASS 2
1.Paints, varnishes, lacquers; preservatives against rust and against deterioration of woods.
2.Colorants; mordants.
3.Raw natural resins; metal in foil and powder form for painters, decorators, painters and artists.
