A call was received about a blaze at 9.25 am.Thirty fire tenders were rushed to the spot and the firefighting operations are still underway, said an official from the Delhi Fire Services.
The fire engulfed a scrap dealer's shop, a shoe godown and another factory.
The two firemen were identified as Manish and Ranbir.
Last week, a fire broke out at "cold firecrackers" unit in Bawana that killed 17 people, including 10 women.