CASC reported on March 18, 2026 that the SAST control institute's space-grade high-precision accelerometer assembly won an order for a cislunar deep-space project at the Shanghai Engineering Center for Microsatellites. It is described as the product's first external-market order. The assembly supports precise spacecraft attitude and orbit control. Its design includes vibration and shock optimisation and secondary sealing for long-term reliability. The notice gives no numerical accuracy, measurement range or project orbit parameters, so none are inferred. Flight verification beginning in 2021 and use on Land Exploration Satellite-1 are earlier background, not new 2026 launches. The newly disclosed milestone is a contract and commercial application. Its value, delivery date and a named deep-space mission were not published. Further product standardisation and batch manufacturing remain development directions; winning the order is not evidence that the new project has launched or passed orbital acceptance.