Primary product 

SANRO is a product brand created by COG Design Studio.COG operates a small-scale factory capable of metal fabrication, primarily developing products using metal sheets. SANRO began with the idea of repurposing leftover metal offcuts generated during this process to create everyday household items. 

The brand’s signature product is the switch cover. Designed to be installed over existing light switches, it offers an easy alternative for those who want to refresh discolored or yellowed plastic switches without undergoing electrical work. Over time, standard plastic switches can degrade and clash with interior decor, and SANRO’s cover provides a simple and stylish solution.

In addition to switch covers, SANRO continues to develop a variety of decorative interior items. While not every product can be made entirely from offcuts, the brand strives to use recycled materials whenever possible. Metal sheets are not simply discarded—they can be melted down and reformed into new materials, reinforcing SANRO’s commitment to sustainability.

Drawing inspiration from subtle, often overlooked elements in everyday life, SANRO aims to create designs that resonate widely and bring thoughtful detail into daily living.

Collaborative product

SANRO collaborates with designers and creators from around the world to develop unique product series.
By combining its refined materials and metalworking techniques with each collaborator’s creative vision, SANRO brings to life beautifully crafted objects that blend function with aesthetic depth. These collaborations reflect the brand’s commitment to creating thoughtful, evocative pieces that resonate across cultures and disciplines.