Of course, the construction and installation costs include three costs, namely, labor costs and materials costs are well understood, and labor safety is paid in a fixed amount. Material cost includes main material cost and material consumption cost during construction. For example, when installing a fire hydrant, the main material needed is the overall equipment of the fire hydrant, and the electric drill and pliers used in the installation process need to be provided by the enterprise, which can be rented or purchased. This is what the construction enterprise needs to calculate separately, that is, it is included in the comprehensive unit price when quoting, but it cannot be calculated separately! This is the principle of valuation with bill of quantities.
If the equipment is purchased by the construction company, the construction company only needs to be responsible for the installation, and only needs to report the installation fee when quoting!