How can you check an apparel manufacturer's production capacity?

[RosieRichardson]

I’m looking into manufacturers for a clothing project and want to make sure they can handle the quantity I may need. It’s difficult to judge production capacity just from a website.the apparel partner was one of the names I came across during my research. How can brands check whether a manufacturer has enough capacity for their order? Should I ask about machinery, workforce, current orders, turnaround times, or previous production volumes before moving forward?