1, falsely reporting the engineering quantity, because the decoration owner didn't quite understand the calculation rules of engineering quantity, so when quoting, he roughly estimated the engineering quantity and set up multiple repeated pricing methods to make money. A little more here, a little more there, summed up a lot.
2. Fuzzy important parameters of main materials. Similar main materials of the same brand are sometimes divided into first-class products and second-class products, which vary greatly during the period. As for the practical significance of the same item, we can make a big fuss about it.
3, the construction technology is vague, wall coating construction, ground construction, etc. all have their own construction technology requirements, and missing a process in the middle may bring you a lot of trouble in your future life.
4. When a single price is lowered, the owner usually knows some price information in advance, but this is often not comprehensive enough. Some owners even know the current market price of the floor, but may not know the labor cost of the floor installation, so they always lose money on the labor cost after cutting the floor price.
Therefore, it is unwise to choose a decoration company only based on the quotation. For the ubiquitous trap, the best way for lazy people is to choose one or two companies with scale, credibility and space, look at, analyze and review them one by one, then come up with a construction plan and process that will make you completely clear, understand the basis of project quotation, and finally negotiate a price acceptable to both parties. There is absolutely nothing wrong with this.