1. Transportation and accommodation expenses: including transportation expenses to the survey site, such as air tickets, train tickets, car rental, public transportation and accommodation expenses during the survey period, such as hotel room fees and rental fees.
2. Catering expenses and communication expenses: including meals during the inspection period, such as breakfast, lunch and dinner, and entertainment expenses when communicating with target units or individuals, such as treating guests and giving gifts.
3. Activity expenses and clerical expenses: such as the expenses of attending academic conferences, seminars or visiting factories, and the expenses of purchasing materials, printed documents and other relevant documents needed for investigation.