MAGTERIAL CATHODE

systems and parts therefore used in the production of semiconductors, namely, photomasks; wireless radio frequency generators; printed circuits and power supplies; semi-conducting and semi-insulating and polycrystalline gallium arsenide in the form of wafers; high density interconnectors; electric or electronic sensors for sensing light; opto-electronics, namely, lasers and blank optical discs; flat electric luminescent display panels; radio frequency power devices, namely, radio frequency generators and power supplies; sputtering systems, namely, thin film making sputterers; surface cleaning sputterers and etching sputterers; and cathode ray tubes