What insurance company is best for a low risk manufacturing space?

Im the main worker in the space but I can have up to 5 contractors in here at a time during busy season, the goods produced and stored here value $30000 and up each and there can be 3-16 of those items in the space at a time

I'm having trouble finding the best insurance and how to even appraise the space with all the variables (and the materials themselves

TIA!