Open a computer repair store Documents first to the Industrial and Commercial Bureau for business license, and then to the Tax Bureau to apply for a tax registration certificate can be. However, it is best to be able to buy your own goods, but with manpower. To know the market price can go to the technology market, every day there is a quotation list, basically the difference will not be too much; you can also go to the province of the technology market website above the price of the query; other provinces of Zhongguancun; website can also be, the price of selling higher than the above can be; specifically you can hand over a friend of the science and technology market; in addition to the other at the same time and a few often cooperate with the company to contact. Brand machine profits are now higher than the assembly machine, assembly machine competition is great, the price is relatively transparent, but because the buyer is not all computer connoisseurs, brand machine profits are still relatively stable. Computer repair also requires screwdrivers of various shapes and sizes, pinchers, meters, air guns and soldering pens, test equipment such as monitors, software for installation (including GHOST systems), and computer accessories that can be sold. To reduce the cost, mainly depends on your relationship with your buyer, in the purchase of goods must be with the computer hardware sellers to establish a good relationship! So that you can be able to take goods at a low price, which is also the source of your profits, can not just make money with the service, it is best to be able to assemble the machine, if your investment is small, then do not press the goods. I hope your business is prosperous!