If the wiper of the suction truck was opened in rainy and rainy weather, it was discovered that the wiper did not clean the rain on the windshield. Driving the vehicle in such a condition would not only affect the driver’s driving. State, it will cause great security risks. Then what should we pay attention to when buying a wiper?1, because the use of different models are different, so the front windshield of each vehicle will also have a gap. Of course, there will be some gaps in th