7 Injection moulding machines and structural machine parts therefor, including micro-precision structural machine parts, moulds, and mechanical machine tools in the nature of hot-runner tools, pneumatic tube conveyors for hot-runner tools, sealing needles, pistons, cylinders, nozzles, bushings, injectors, and machine tool dies, all for use in plastic injection moulding; pneumatic controls for machines, namely, pneumatic controls for hot runner systems of plastic injection moulding machines