(Based on 44(e)) Treatment of materials, namely, articles of stone, semi-precious stones, metals, plastics, ceramics, and glass materials, by chemical alteration of surfaces with chemicals and chemical precursors to form coatings

Paints [, lacquers and primers ] for use in manufacturing, repair, and maintenance in the aerospace, aircraft and defense industry

glassware made of fused quartz for use in the electronic, chemical and medical arts; namely, plates, tubes and trays made of fused quartz

MINERAL INSULATED THERMOCOUPLES; TERMINATIONS FOR SEALING MINERAL INSULATED THERMOCOUPLES AND PARTS AND FITTINGS FOR MINERAL INSULATED THERMOCOUPLES, NAMELY, GLANDS, SEALS, POTS, END SLEEVES, PROTECTION TUBES, AND BAR AND TIG WIRE

high-temperature fabrics manufactured into insulation blankets and shields

RAW OR PARTLY PREPARED MATERIALS INCLUDING FUSED SILICA AND CLAY BONDED REFRACTORY MATERIAL CONTAINING FUSED SILICA