Cutting tools for machine tools, namely, drills, drill bits, drill chucks, drill heads, reamers, milling cutters, end mills, bites, insert tips, tool holders, taps and tread cutting dies; dies for machine tools; electric spark unit composed of spark ignition system used to ignite high density city gas; parts for industrial machines, namely, [ silicon rectifier containers, ] seal valves, mechanical seals, seal rings for machines, [ valve plungers, ] vacuum chuck plates for semiconductor manufacturing equipment, [ air bearings for copy machines and printers, ] electrically conductive zirconia for stamping punches and dies, bearings, ball bearings, ball rings for bearings, balls for bearings, balls for clack valves, balls for actuators; wear-resistant machine parts, namely, ceramic liners, sandblast nozzles, [ corundit balls, ceramic mills, crushers, ] welders, [ furnace jigs; ] heat-resistant machine parts, namely, [ welding nozzles, burner nozzles, ] casting gate nozzles [, ceramic refractory tubes, non-metallic protecting tubes ]

[ Dielectric substrate used for microwave circuits; microwave capacitor; ] electronic components for communicational products, namely, piezoelectric rubber sheet, piezoelectric wiring, piezoelectric buzzer, piezoelectric speaker, piezoelectric buzzer diaphragm, diaphragm element for tweeter, bimorph; batteries for electric and electronic apparatus and their accessories, namely, battery boxes, battery chargers and adapters; integrated circuits, cerdips, namely, ceramic dual in-line packages composed of ceramic substrate and lead frame; IC packages composed of ceramic substrate or core substrate with build up layer and bumps and lands, lead frame or pins; multi-layer printed circuit boards, multi-layer circuit substrates, [ electronic ceramic filters, ceramic audio tone transducers, electronic transducers for use in wave transmitters and receivers for underwater and aerial communications, dielectric filters, antenna switch modules, dielectric duplexers, dielectric antennas, dielectric resonators; ] gas sensors for measuring gas concentration of oxygen, nitrogen oxide, hydrocarbon, methane, alcohol and hydrogen in air or gas; gas sensors for detecting air/fuel ratio in the exhaust gas from internal combustion engines, boilers, incinerators, gas turbines and generators; electronic sensors for measuring pressure, temperature and humidity; electronic sensors for detecting knock, fluctuating load and air quality; vacuum circuit breakers, ceramic ozonizers [, photo-diode carriers, namely, pedestals on which chips are attached for transforming light into electronic signals in laser modules for optical communications ]

[ Piezoelectric igniters and handy lighters for used in gas ranges, stoves and heaters; ceramic heaters, ceramic disks for water faucets; kiln parts, namely, rollers for roller hearth kilns, heater elements ]

Insulating materials, namely, [ insulating tubes, ] non-metallic shaft-enclosing tubes, insulating substrates used for electronic industry