Capacitators; Computer peripheral equipment; Connecting electrical cables; Connectors for electronic circuits; Electric cables, wires, conductors and connection fittings therefor; Electric resistors; Electrical circuit boards; Electronic components, namely, piezoelectric switches; Infrared sensors; Integrated circuit modules; Laboratory equipment and supplies, namely, calipers; Plug connectors; Printed circuit boards (PCBs); Switches, electric; Testing apparatus for testing printed circuit bo...