28309011 -- Sulphides of calcium, of antimony or of iron
20029091 --- In immediate packings of a net content exceeding 1?kg
84081061 ---- For seagoing vessels of headings?8901 to 8906, tugs of subheading?89040010 and warships of subheading?89061000
27102038 --- With a sulphur content exceeding 0,5?% by weight
73042910 --- Of an external diameter not exceeding 168,3?mm