The debts of a collapsed group of NSW businesses have blown out...

The debts of a collapsed group of NSW businesses have blown out to almost $23 million, while other subsidiaries have quietly gone under in recent weeks.

News.com.au reported in April that a western Sydney factory had closed down and all workers had been terminated on the spot.

It comes after two companies linked to the Sydney-based Apollo group, which manufactures kitchen and bathroom joinery, have entered liquidation after 56 years in business.

When Apollo Kitchens (NSW) Pty Ltd went into liquidation, all its 65 workers were called to the front of the factory and learned they were jobless.

Apollo Kitchens owes $11.2 million to creditors, including staff, according to its liquidators.