Drug charges for NSW dad and two sons

Four men, including a father and his two adult sons, will face court charged with supplying large quantities of heroin and cocaine from a factory in Sydney's south.

In September police arrested a 48-year-old a 44-year-old near a Kogarah factory in September where police seized $367,000 worth of cocaine and $262,000 of heroin.

Following inquiries, the 48-year-old's sons, aged 23 and 26, have both been charged in November, police said.

The brothers are due to face Central Local Court in January.