9 Electrolysers being electrolytic cells; drawing or drafting machines; fire extinguishers; fire hose nozzles; sprinkler systems for fire protection; fire alarms; gas alarms; anti-theft warning apparatus, namely, glass fracture sensor alarm, door breaking sensor alarm, intrusion alarm for door, crime prevention buzzer, portable security alarm, siren for alarm, buzzer for alarm, bell for alarm, intrusion alarm, intrusion detector alarm, security voice alarm, and burglar alarm; protective helmets; laboratory apparatus and instruments, namely, air-gas analysis producers, constant temperature incubators, constant humidity incubators, glassware for scientific experiments in laboratories, porcelain ware for scientific experiments in laboratories, furnaces for laboratory experiments, pre-packed columns for use in separation and purification, homogenizers; optical apparatus and instruments, namely, telescopes, body-tubes for telescopes being lens-barrels, tripods for telescopes, periscopes, binoculars, reflectors for telescopes, prisms for telescopes, lenses for telescopes, microscopes, magnifying glasses, body-tubes for microscopes being lens-barrels, metallurgical microscopes, biological microscopes, reflectors for microscopes, prisms for microscopes, polarizing microscopes, stereoscopes, lenses for microscopes; measuring or testing machines and instruments, namely, temperature indicators, gasometers, thermometers, water meters, balances, tape measures, measuring rules, pressure gauges being manometers, level indicators being spirit levels, hygrometers, illuminometers, vibration meters, flow meters, angle gauges, angle dividing apparatus being measuring instruments, length measuring gauges, screw-thread measuring machines and instruments, flatness testing machines and instruments, automatic pressure control machines and instruments, automatic liquid-flow control machines and instruments, automatic liquid-level control machines and instruments, automatic temperature control machines and instruments, namely, an environmental monitoring system comprised of meters and sensors that measure temperature and includes alarm and reporting functions; program control machines and instruments in the nature of manufacturing process control micro-processor based hardware and software used to monitor the status of industrial machinery; power distribution or control machines and apparatus, namely, electric switches, electric relays, circuit breakers, power controllers, current rectifiers, electric connectors, electric circuit closers, electric capacitors, electric resistors, local switches, power distributing boxes, plug boards, fuses for electric current; batteries and dry cells; electric or magnetic meters and testers, namely, phase indicators, oscillographs being oscilloscopes, circuit testers, antenna parameter measuring apparatus; detectors being electric or magnetic meters and testers, namely, zero-phase current meters and testers, reverse-phase current meters and testers,voltage meters and testers, and contact adhesion meters and testers; ground detectors being electric leakage detectors, magnetometers, frequency meters, vacuum tube characteristic testers, watt hour meters, resistance measuring instruments, voltmeters, wave meters, ammeters, wattmeters, oscillators, capacity measures being electric or magnetic meters and testers, namely, capacitance meters and testers; electric wires and cables; electric buzzers; telecommunication devices and apparatus, namely, cable broadcast transmission machines and apparatus, power-line transmission machines and apparatus, open-wire transmission machines and apparatus; radio communication machines and apparatus, namely, portable radio communication machines and apparatus, aeronautical radio communication machines and apparatus, multi channel radio communication machines and apparatus for fixed stations, single-channel radio communication machines and apparatus for fixed stations, vehicular radio communication machines and apparatus, marine radio communication machines and apparatus; portable radio communication machines and apparatus, remote control telemetering machines and instruments, antennas being aerials, cabinets specially adapted for telecommunication apparatus, electrical connectors for telecommunication apparatus; stands and racks specially adapted for telecommunication machines and apparatus, change-over switches for telecommunication apparatus, plug boards; mouse pads for computers; mouse for computers; electronic machines, apparatus and their parts, namely, computers, hard disk drives, electronic circuits; electrodes; dust masks; gas masks; welding masks