Machines and parts of machines for the glass printing industry, namely, fused silica rollers and mechanical end cap fastenings for fused silica rollers; machines and parts of machines for the semi-conductor industry, namely, semiconductor manufacturing machines and parts therefor; machines and parts of machines for the glass industry, namely, glass-working machines and parts therefore, fused silica rollers and mechanical end cap fastenings for fused silica rollers; machines and parts of machi...