Description :
Tenders for Supply Of Earphone And Microphones D D - Development Of Earphone And Microphone Technology , Fabrication Of 300 Ohm Impedance Electro Dynamic Earphone , Fabrication Of 300 Ohm Impedance Electro Magnetic Earphones , Fabrication Of 10 Kilo Ohm Impedance And 1600 Ohm Dc Resistance Electro Magnetic Earphones , Fabrication Of 19 Ohm Impedance Electro_dynamic Earphone , Fabrication Of 300 Ohm Impedance Electro Magnetic Microphone , Fabrication Of 75 Ohm Impedance And 40 Ohm Resistance Electro Magnetic Microphone , Fabrication Of 7.5 Ohm Impedance Electro Magnetic Microphone , Fabrication Of 19 Ohm Impedance Electro Dynamic Boom Microphone , Fabrication Of 150 Ohm Impedance Electro Dynamic Boom Microphone