Outer space, explained.
A Long March-8A carrier rocket carrying a group of internet satellites blasts off from the Hainan commercial spacecraft launch site in March, Wenchang, China (Jiang Jurong/VCG via Getty Images)
Will customers buy in?
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China’s start-ups want to offer a satellite repair service in spaceChina’s start-ups want to offer a satellite repair service in space
Alibaba and China Mobile are backing (Opens in new window) a Chinese startup that wants to refuel and maintain satellites in orbit. The money is arriving before its first orbital demonstration. Whether customers follow will test a consequential part of China’s space policy: how to turn national infrastructure ambitions into commercial demand.
On 12 October, Anhui-based Sinxbot disclosed (Opens in new window) several hundred million yuan, equivalent to tens of millions of US dollars, raised across three financing rounds. Alibaba and a China Mobile industrial fund led the latest drive. On 19 October, Shanghai’s Guoyu Xingchen (Opens in new window), known in English as Space Robot, announced (Opens in new window) its own Series A financing (Opens in new window). Both are developing robots to work on spacecraft already in orbit.
The attraction is understandable. A satellite can retain useful instruments after its fuel runs low. Refuelling it, supplying propulsion or replacing a component could preserve an expensive asset. Yet the number of operational satellites says little about how many owners will pay for maintenance.
That is where those new investments become a policy story. China can support both servicing companies and their prospective satellite-constellation customers. Can it connect the two without assuming that technical capability will create its own market?
A satellite can retain useful instruments after its fuel runs low.
The companies’ announcements reveal the distance still to travel. Sinxbot plans (Opens in new window) its orbital demonstration in 2027. Guoyu Xingchen has tested propulsion, control and navigation systems in space, but its founder says (Opens in new window) its robotic arm has yet to fly. Its next spacecraft is intended to test the arm and a refuelling connection. Earlier this year, a Tsinghua University team reported (Opens in new window) orbital testing of a flexible robotic arm intended for refuelling, thereby illustrating progress towards servicing without establishing actual fuel transfer between spacecraft.
Guoyu Xingchen does report business: orders to carry customers’ experimental instruments, deliveries of propulsion components and entry onto a national satellite-internet operator’s supplier list. These are routes to revenue and future customers. They do not establish contracts to repair, refuel or remove satellites. A place on a supplier list is not a purchase order.
China’s National Space Administration (Opens in new window) has already identified government purchasing as a lever. Its November 2025 commercial-space action plan (Opens in new window) encourages commercial participation in national research programs, commercialisation of publicly funded technology and expanded government purchases of commercial-space services. Public agencies could help companies secure their first customers. The plan itself, however, awards no servicing contract.
Buying an experimental spacecraft rewards delivery of hardware; buying a defined inspection or life-extension service makes the supplier responsible for an operational result. Competitive contracts could test prices and performance while giving customers evidence on which to base further purchases.
American experience shows why that distinction should be considered. There is a working business in extending the lives of valuable communications satellites. Northrop Grumman’s Mission Extension Vehicle-1 completed five years (Opens in new window) of service for Intelsat 901 in April 2025. Attached to the customer’s spacecraft, it supplied propulsion and controlled its orientation. That approach extended the satellite’s working life without transferring fuel into it.
NASA offers a more uncomfortable lesson. Its cancelled (Opens in new window) On-orbit Servicing, Assembly and Manufacturing (OSAM)-1 project would have refuelled a satellite never designed for maintenance. Alongside technical, cost and schedule challenges, NASA cited the absence of a committed partner to take the capability forward and a broader shift away from refuelling unprepared spacecraft. A government willing to invest in servicing could not ensure a path to sustained use.
NASA continues to fund (Opens in new window) more tightly defined demonstrations (Opens in new window). Its US$15 million inspection mission, developed and operated by Starfish Space (Opens in new window), launched on 1 October (Opens in new window) this year. The spacecraft is scheduled to inspect defunct objects in 2027 without touching them. The US government is purchasing an opportunity to establish capabilities rather than evidence of an already functioning repair market.
This comparison challenges any neat division between Chinese state direction and American private enterprise. Both combine public support with commercial initiative. The policy question is which risks government should absorb and when a company must demonstrate that customers value its service.
Compatibility is one such risk. A satellite without an accessible fuel connection or attachment point may be difficult to service economically. China’s April 2026 commercial-space standards framework (Opens in new window) calls for common interfaces and open architectures but does not itself require every satellite to carry a refuelling port.
US initiatives include Orbit Fab (Opens in new window)’s openly licensed refuelling connection and CONFERS (Opens in new window), an international industry association developing voluntary standards (Opens in new window) for satellite servicing (Opens in new window). Such arrangements can help different manufacturers’ spacecraft work together. They also raise a competition question: will operators be able to choose among servicing suppliers or will their spacecraft’s design constrain that choice?
Safety oversight is developing alongside the market. Chinese rules (Opens in new window) issued in March 2025 require commercial flight-control providers to report proposed docking, maintenance and debris-removal operations at least 30 days in advance for government safety review. The United States is testing voluntary certification (Opens in new window) for novel activities, including servicing. Its pilot leaves existing licensing obligations in place.
Neither approach settles the commercial calculation. Servicing must compete with replacement, especially for smaller satellites. Public procurement can establish early demand but contracts should test a useful service at a credible price.
Sinxbot’s and Guoyu Xingchen’s funding announcements show investors preparing now for an orbital maintenance economy. China’s next revealing announcement would be a customer buying the maintenance itself.
About the author
Richard de Grijs
Richard de Grijs (Opens in new window) is Professor of Physics and Astronomy at Macquarie University and former Executive Director of the International Space Science Institute–Beijing.
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