MILWAUKEE, Wis. (WTAQ) - Firefighters are battling a blaze Thursday morning at a metal-plating factory in Milwaukee.

No injuries have been reported in the fire at Artistic Plating. Deputy Fire Chief Randall Zingler says there’s a big concern for what the firefighters are breathing. That’s because the factory uses numerous chemicals for its electroplating and metal finishing operations.

Zingler says the blaze is concentrated in a place with large vats of acid, and the ventilation system has been hampered.