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Machine parts, namely, wheels for corrugated box making machines; machine parts, namely, rollers used to engage and move material through corrugated box making machines; machine parts, namely, roller bearings for corrugated box making machines; machine parts, namely, wheel hubs for corrugated box making machines; machine parts, namely, wheel cores for corrugated box making machines; machine parts, namely, doctor blades used in corrugated box making machines to wipe off excess ink; machine parts, namely, glue heads used in corrugated box making machines to apply glue to boxes; machine parts, namely, cylinders used in corrugated box making machines for carrying cutting dies; machine parts, namely, belts used in corrugated box making machines for transporting corrugated boxes through the machine; machine parts, namely, knives used as part of corrugated box making machines to remove scrap material from finished boxes as it moves through the machine; machine parts, namely, blades used as part of corrugated box making machines to cut slits in boxes as they move through the machine; machine parts, namely, scrapers used in corrugated box making machines to remove ink used in the printing process; machine parts, namely, seals used in corrugated box making machines to keep ink contained in a trough in the printing section; machine parts, namely, ink pumps used in corrugated box making machines to pump ink into a trough used to distribute ink to printing plates in the print section

Repair or maintenance of machinery and machinery parts used by the corrugated packaging industry