6. X-SPACE Company plans to open a vehicle repairing factory, and paid a market research fee of 60,000 yuan a year ago to investigate its potential market situation. The information obtained through investigation is as follows: It is necessary to purchase a repairing equipment with a value of 260,000 yuan, which is estimated to be used for 5 years. The residual value stipulated in the tax law is 10,000 yuan, which is depreciated by the straight-line method. The production workshop of the repair plant can use an idle factory building of the company, and the current market price of this factory building is 185,000 yuan. The estimated annual repairing hours is 50,000 hours, 80,000 hours, 12,000 hours, 10,000 hourss and 6,000 hours. The market price is 10 yuan in the first year. Due to competition and inflation, the price will increase by 3% every year. The unit cash cost is 5 yuan of each hour in the first year. With the increase of raw material price, the unit cash cost will increase by 8% every year. To invest in this project, it is necessary to advance the working capital of 12 000 yuan at the beginning of the period and Retrieve the Working capital at the end of project. The corporate income tax rate is 20%.. Requirements: please calculate the net cash flow of the investment project in each year