| http://www.w3.org/ns/prov#value | - All contractors bidding to any contractor as a subcontractor, if they are performing electrical, mechanical, plumbing, HVAC, roofing or masonry, they are required to be licensed and must have a monetary limit to cover the entire portion of their work, including the cost of labor and equipment; as the prime contractor cannot delete the cost of materials, labor and equipment for these portions of th
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