Familiar with quota
Be familiar with the quota, set the quota correctly, and distinguish between what is considered in the quota and what needs to be determined according to the situation. Remember, installation is nothing more than four things: the number of meters of pipeline extension, attention should be paid to the relationship between buckle, reservation and bending; Pay attention to those things according to the number of finished products; Covered square meters and cubic meters, pay attention to distinguish the thickness of materials, etc. ; Large-scale equipment is divided into bulk or finished products according to sets.
The material can't be wrong.
Materials can't be mistaken, and the prices of different materials vary greatly.
You can't miss a project
You can't leave out items.
Software use skills
When using the software, pay attention to the adjusted refresh.