Im not saying this is definitely the case but your filter looks very much like an aqueon quietflow canister filter. They may be the same filter just with different branding. In which case the spares should be interchangable. Maybe contact aqueon and ask them.
Im assuming aqueon parts etc are more easily obtainable for you. Im seeing parts for the astro mainly on asian and australian sites.
Many identical filters are sold under different brands. Allpond Solutions, sunsun, polar aurora, marineland all have filters identical to each other.