Explanatory notes
… - - Other - Additives for lubricating oils : 3811.21 - - Containing petroleum oils or oils obtained from bituminous minerals 3811.29 - - Other 3811.90 ‑ Other The preparations of this … and tetramethyllead, and also contain, for example, 1,2‑dibromoethane or monochloronaphthalene. The heading does …