Explanatory notes
… and electronic assemblies and printed circuit boards : 8549.31 - - Containing primary cells, primary batteries, … cadmium, mercury, lead or polychlorinated biphenyls (PCBs) 8549.39 - - Other - Other : 8549.91 - - … the recovery of these precious metals. Subheadings 8549.21, 8549.31 and 8549.91 For purposes of these subheadings, the …