At the end of 2011, China's civil car ownership reached 105 million 780 thousand vehicles (including 12 million 280 thousand cars and low speed trucks), up 16.4% from the end of the year, of which 78 million 720 thousand owned by private cars, an increase of 20.4%, of which there were 43 million 220 thousand private cars, up 25.5%. Although more and more cars, but the owners of the maintenance has never stopped, the owners of their own friends also have some small tricks. Experts say that sandpaper can be used to maintain the wiper film. Let's get to know the next one. If you don't pay attention to the maintenance of the wiper, especially in the case of large dust, you will soon find that the wiper can not scrape the glass, and will leave a lot of fine water. At this time, you need to find a number of 2000 water sand paper (No. 1500 is also OK, water sand paper is generally available in a hardware store, very cheap), in the two sides of the wiper film carefully polished back and forth. In particular, compare the scratches on the glass and polish them a few times, so that the wipers can be restored to their original state. Also, if the car stops in the sun, it is necessary to keep the wiper, so that the wiper film will not be forced and can slow the aging of the film. Some people like to hit a few rain scrapers every morning when they go to the car. Then we must make a few more dial rods to let the wiper spray several times. This can reduce the dust on the glass and the scraper film, and reduce the probability of the film being scratched by small sand and dust. Take note of the above points, and ensure that your wiper will last for three or five years, as well as new ones. If you don't believe it, you can try your friends.