591 Units · Korean Bedding Market: A Single-Site Closed-Loop Product-Service System Case Study at Gangdong I-Park The River

What happens when 591 households share a single bedding service? This volume documents an unprecedented single-site closed-loop Product-Service System (PSS) experiment at Gangdong I-Park The River, a 591-unit residential officetel in Seoul, Republic of Korea - the same building that hosts the IKEA Gangdong store as a ground-floor tenant. Through the Le Riverside Linen Lab, this case study traces how a single-site PSS bypasses the information asymmetries that have prevented industrial-scale bedding recycling in Korea. The volume documents the IKEA partnership sequence, the KATRI 4-Test Panel methodology for down content verification, and the year-tagging system that converts opaque textile flows into auditable inventory records. Drawing on Korean Customs Service trade invoice data, KATRI quality testing standards, and operational metrics from the Le Riverside Linen Lab pilot, this case study demonstrates how a single-site PSS can serve as a regulatory sandbox for nation-scale EPR implementation. Key topics: single-site closed-loop PSS architecture - IKEA partnership sequence - KATRI 4-Test Panel (Down content, Cleanliness, Fill Power, Species ID) - Korean Customs Service trade invoice integration - Le Riverside Linen Lab operational model - year-tagging methodology - 591-unit residential officetel sandbox. Written for circular economy researchers, PSS practitioners, Korean sustainability policy analysts, and operations managers in the textile and bedding industries.