The Hospital Authority awarded two contracts in late 2022 and early 2023. Aster will provide Maintenance Service for Air Handling Unit, Primary Air Handling Unit, Mobile Modular HEPA Unit and Fire Damper at Wai Shun Block for Caritas Medical Centre, Kowloon West Cluster, Hospital Authority.

The 2023 Contract covers Maintenance Service for Mechanical Ventilation and Air-Conditioning System (MVAC) at Wai Yee Block for Caritas Medical Centre, Kowloon West Cluster, Hospital Authority.