but because of its market price is generally higher than electronic tools, which has become a pneumatic tool is not widely used up the main reason. But according to the operators, with the continuous improvement and maturity of domestic production technology, the price of pneumatic tools will gradually drop. The price of these 3 kinds of electric drill from low to high arrangement, the function also increases accordingly, how to choose specifically, need to combine their applicable scope and requirements Choose electric drill method: take indoor ceiling as an example,