Please advise and thank you for the specific meaning of the content of 93 quota for consulting ventilation engineering budget. See the attached drawings for details.

Ventilation engineering budget. This is to calculate the length and diameter of the ventilation duct used. In addition to the materials needed for ventilation, it is also necessary to calculate the materials and labor costs of some nodes. In the process of taking the air duct, the site is complicated, and some links need to bypass the cross beam dragon skeleton, which requires labor costs and auxiliary materials. Therefore, it must be stated in the budget that these expenses should be included in the project cost.