8538 (01/1988-..) Parts suitable for use solely or principally with the apparatus of heading 8535, 8536 or 8537, n.e.s.

85381000 (01/2017-..) Boards, panels, consoles, desks, cabinets and other bases for the goods of heading 8537, not equipped with their apparatus 85389010 (01/1988-12/1997) Electronic assemblies for control desks, cabinets and similar combinations of apparatus of heading 8537 85389011 (01/2017-..) Electronic assemblies for wafer probers of subheading 8536.90.20 85389019 (01/2017-..) Parts for wafer probers of subheading 8536.90.20, n.e.s. (excl. electronic assemblies) 85389090 (01/1988-12/1997) Parts suitable for use soley or principally with the apparatus of headings 8535, 8536 or 8537, n.e.s. 85389091 (01/2017-..) Electronic assemblies for electrical apparatus for switching or protecting electrical circuits, or for making connections to or in electrical circuits of heading 8535 or 8536 and for control desks, cabinets and similar combinations of apparatus of heading 8537 (excl. for wafer probers of subheading 8536.90.20) 85389099 (01/2017-..) Parts suitable for use solely or principally with the apparatus of heading 8535, 8536 or 8537, n.e.s. (excl. electronic assemblies, and boards, panels, consoles, desks, cabinets and other bases for the goods of heading 8537, not equipped with their apparatus, and for wafer probers of subheading 8536.90.20) 8539 Electric filament or discharge lamps, incl. sealed beam lamp units and ultraviolet or infra-red lamps, arc lamps, light-emitting diode `LED` lamps, parts thereof