Sustain Space

Sustain Space is a Suzhou, Jiangsu Province, China-based on-orbit servicing (OOS) startup founded in 2022 developing technologies for active debris removal (ADR), satellite refueling, and in-orbit satellite repair — positioning itself as China's leading commercial orbital services company in a sector that has gained significant attention globally following demonstrations by Astroscale (Japan/UK), Northrop Grumman's Mission Extension Vehicle, and NASA's OSAM-1. The on-orbit servicing market addresses an acute need as the orbital environment fills with aging GEO satellites that have exhausted their onboard propellant (but remain otherwise functional), defunct satellites, and fragmented debris from breakups and collisions. Sustain Space develops the rendezvous and proximity operations (RPO) technology, robotic capture mechanisms, and propellant transfer systems required to service satellites already in orbit — either extending their operational lives through refueling, repairing failed components, or actively deorbiting debris. China has a strong national interest in both the commercial OOS market and in demonstrating proximity operations capability for dual-use applications, and Sustain Space operates within China's rapidly expanding commercial space ecosystem (centered in Beijing, Shanghai, and Suzhou) that has emerged since the 2014-2015 policy opening of the space sector to private enterprise. The company's development status reflects the significant technical and regulatory challenges of commercial OOS operations.