KACO TUBE Aluminum Gel Ink Pen
A slim retractable gel pen built around an aluminium barrel, a straight side clip and a coordinated range…
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A Shanghai-founded stationery brand that applies restrained industrial design, coordinated colour and practical detail to writing and desk objects.
Identity record

Representative products
A slim retractable gel pen built around an aluminium barrel, a straight side clip and a coordinated range…
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A 15cm aluminium ruler with laser-engraved markings and a folded end that doubles as an integrated bookmark clip.
View product →KACO was founded in Shanghai in 2011 and develops writing instruments, office stationery and related creative products. Its catalogue is broad, but the consistent idea is easy to recognise: familiar desk objects are reduced to clear silhouettes, controlled finishes and uncomplicated interactions.
KACO is useful to follow because it treats stationery as industrial design rather than disposable visual noise. Colour is used as a system, not decoration added at the end. Clips, push controls, edges and storage details are integrated into the main form so that a low-complexity object can still feel considered.
The TUBE Aluminum Gel Ink Pen represents KACO’s writing-instrument direction through a slim metal barrel and coordinated multicolour finishes. The RUMA Aluminum Ruler + Bookmark represents the brand’s ability to combine two ordinary desk functions in one restrained aluminium object. These are editorial selections, not an attempt to reproduce KACO’s full catalogue.
KACO’s founding context and the identity of both selected products were checked against the company’s current English-language pages on 6 August 2026. The product pages identify TUBE as an aluminium gel ink pen and RUMA as an aluminium ruler and bookmark. Additional specification details are attributed on the individual product pages to the cited regional KACO store sources.
This is an independent profile based on publicly available manufacturer information. ChinoMuse has not visited KACO, interviewed its team or physically tested the selected products. Inclusion does not imply a partnership, sponsorship or endorsement. Product availability and current variants should be confirmed with KACO.