Unwrought and partially wrought, non-precious metals, namely, steel and steel alloys, high grade steel, [ high speed tool steel, cold worked steel, ] and hot worked steel; all of the aforesaid in the form of bars, blocks [ , and ingots ]

unwrought and partially wrought, non-precious metals, namely, steel and steel alloys, high grade steel, high speed tool steel, cold worked steel, and hot worked steel; all of the aforesaid in the form of bars and ingots

Filter materials and modules all in the nature of filter membranes for laboratory and scientific use for the removal or reduction of viruses from liquid solutions

Containment systems comprising primarily of concrete or reinforced concrete modular walls, barriers and enclosures used for isolating and protecting power distribution equipment from adjacent equipment

Microelectronic semiconductor devices

dental appliances and instruments, namely, a bite block for use when taking impressions of teeth