42 Renting and leasing of new and used electronic test equipment used for scientific research and development of communication systems, telecommunication systems, antennas, cellular phones, fiber optic systems, network cabling, SONET systems, IP networks, wireless systems, industrial testing equipment, electronics, machinery and electrical goods; Renting and leasing of various laboratory supplies, namely, items associated with the electronic test equipment industry, specifically, lab benches, soldering irons, nuts, bolts, fuses, ESD packaging supplies, hand/torque tools, lab safety products and other laboratory apparatus and instruments, all for use for scientific research and development of communication systems, telecommunication systems, antennas, cellular phones, fiber optic systems, network cabling, SONET systems, IP networks, wireless systems, industrial testing equipment, electronics, machinery and electrical goods; Renting and leasing of various laboratory supplies, namely, items associated with the electronic test equipment industry, specifically, lab benches, soldering irons, nuts, bolts, fuses, ESD packaging supplies, hand/torque tools, lab safety products and other laboratory apparatus and instruments, all for use for maintenance and repair of communication systems, telecommunication systems, antennas, cellular phones, fiber optic systems, network cabling, SONET systems, IP networks, wireless systems, industrial testing equipment, electronics, machinery and electrical goods