Procurement of how much equipment need to justify

In principle, equipment procurement should be justified, just some simple, repeated purchases to simplify the process. Justification in addition to business budgets and inputs and outputs, the focus should be demonstrated its technical risk: standard equipment to demonstrate the adaptability of working conditions; non-standard equipment to demonstrate its reliability, the key to the success of the mother of the research. Of course, the high value of the equipment to focus on demonstration, so as to avoid losses caused by errors, as to how much money for the boundary to see the specific circumstances of the enterprise.