Where we could buy the machines useful on the site? Polish machines market is really extended

Our country is surely increased in terms of technique. A lot of nice working manufacturers are enough prepared to do operations in whole countries. But what we could do when we need to do enormous order for big customer? When we try to build residential object we must hire the crew and bring devices. With the first issue can be just small problem cause we must choose between hire them permanently or only for only one contract.